/* ========================================
   NexGen.cash - Modern Hi-Tech Registration
   Color Palette: Dark Navy + Cyan-Blue Gradient
   ======================================== */

/* CSS Variables */
:root {
    /* Primary Colors */
    --bg-primary: #0a0f1e;
    --bg-secondary: #0d1627;
    --bg-tertiary: #111b2e;
    --bg-card: rgba(13, 22, 39, 0.8);

    /* Accent Colors */
    --accent-cyan: #00d4ff;
    --accent-blue: #0066ff;
    --accent-purple: #7b61ff;
    --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #0066ff 100%);
    --accent-gradient-hover: linear-gradient(135deg, #00e5ff 0%, #0077ff 100%);

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #a8b5c8;
    --text-muted: #6b7a8f;
    --text-accent: #7fd3f7;

    /* Status Colors */
    --success: #00e676;
    --warning: #ffab00;
    --error: #ff5252;

    /* Glow Effects */
    --glow-cyan: 0 0 20px rgba(0, 212, 255, 0.3);
    --glow-blue: 0 0 20px rgba(0, 102, 255, 0.3);
    --glow-accent: 0 0 30px rgba(0, 212, 255, 0.2);

    /* Borders */
    --border-color: rgba(0, 212, 255, 0.2);
    --border-hover: rgba(0, 212, 255, 0.5);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Font Family */
    --font-primary: 'Kanit', 'Inter', sans-serif;
}

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Animated Background
   ======================================== */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.bg-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 10% 20%, rgba(0, 102, 255, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 90% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(123, 97, 255, 0.05) 0%, transparent 70%);
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

.bg-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(50px);
    }
}

.floating-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.floating-particles span {
    position: absolute;
    display: block;
    width: 4px;
    height: 4px;
    background: var(--accent-cyan);
    border-radius: 50%;
    animation: float 20s linear infinite;
    opacity: 0;
}

.floating-particles span:nth-child(1) {
    left: 10%;
    animation-delay: 0s;
    animation-duration: 25s;
}

.floating-particles span:nth-child(2) {
    left: 20%;
    animation-delay: 2s;
    animation-duration: 20s;
}

.floating-particles span:nth-child(3) {
    left: 30%;
    animation-delay: 4s;
    animation-duration: 28s;
}

.floating-particles span:nth-child(4) {
    left: 40%;
    animation-delay: 1s;
    animation-duration: 22s;
}

.floating-particles span:nth-child(5) {
    left: 50%;
    animation-delay: 3s;
    animation-duration: 18s;
}

.floating-particles span:nth-child(6) {
    left: 60%;
    animation-delay: 5s;
    animation-duration: 24s;
}

.floating-particles span:nth-child(7) {
    left: 70%;
    animation-delay: 0.5s;
    animation-duration: 26s;
}

.floating-particles span:nth-child(8) {
    left: 80%;
    animation-delay: 2.5s;
    animation-duration: 21s;
}

.floating-particles span:nth-child(9) {
    left: 85%;
    animation-delay: 4.5s;
    animation-duration: 19s;
}

.floating-particles span:nth-child(10) {
    left: 95%;
    animation-delay: 1.5s;
    animation-duration: 23s;
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }

    10% {
        opacity: 0.6;
    }

    90% {
        opacity: 0.6;
    }

    100% {
        transform: translateY(-100vh) rotate(720deg);
        opacity: 0;
    }
}

/* ========================================
   Language Toggle
   ======================================== */
.lang-toggle {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 1000;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.lang-btn:hover {
    border-color: var(--border-hover);
    box-shadow: var(--glow-cyan);
    transform: translateY(-2px);
}

.lang-flag {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flag-icon {
    width: 24px;
    height: 16px;
    border-radius: 3px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* ========================================
   Container
   ======================================== */
.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    padding: var(--spacing-xl) var(--spacing-md);
    padding-top: 80px;
}

/* ========================================
   Logo Section
   ======================================== */
.logo-section {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: fadeInDown 0.6s ease;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.logo-img {
    height: 80px;
    width: auto;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.3));
    transition: all var(--transition-normal);
}

.logo-img:hover {
    filter: drop-shadow(0 0 15px rgba(0, 212, 255, 0.6));
    transform: scale(1.05);
}

.tagline {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 300;
}

/* ========================================
   Card Component
   ======================================== */
.card {
    width: 100%;
    max-width: 480px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    animation: fadeInUp 0.6s ease 0.2s both;
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.card-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ========================================
   Form Styles
   ======================================== */
.form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.label-icon {
    font-size: 1rem;
}

.required {
    color: var(--error);
    margin-left: 2px;
}

/* Input Styles */
input[type="text"],
input[type="number"],
input[type="tel"],
input[type="url"],
input[type="email"],
input[type="password"],
select,
textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-normal);
    outline: none;
}

input::placeholder,
textarea::placeholder {
    color: var(--text-muted);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent-cyan);
    box-shadow: var(--glow-cyan);
    background: var(--bg-secondary);
}

input:hover:not(:focus),
select:hover:not(:focus),
textarea:hover:not(:focus) {
    border-color: var(--border-hover);
}

/* Select Arrow */
select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2300d4ff' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
    cursor: pointer;
}

/* Textarea */
textarea {
    resize: vertical;
    min-height: 80px;
}

/* Dual Input (Occupation + Income) */
.dual-input {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

/* Phone Input Group */
.phone-input-group {
    display: flex;
    gap: var(--spacing-sm);
}

.country-code {
    width: 110px;
    flex-shrink: 0;
}

/* OTP Input Group */
.otp-input-group {
    display: flex;
    gap: var(--spacing-sm);
}

.otp-btn {
    flex-shrink: 0;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.otp-btn:hover:not(:disabled) {
    background: var(--accent-gradient-hover);
    box-shadow: var(--glow-cyan);
    transform: translateY(-2px);
}

.otp-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.otp-timer {
    font-size: 0.75rem;
    color: var(--text-accent);
}

/* Error Message */
.error-message {
    font-size: 0.75rem;
    color: var(--error);
    display: none;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: var(--error);
}

.form-group.error .error-message {
    display: block;
}

/* ========================================
   Phone Models Selection
   ======================================== */
/* ========================================
   Phone Models Selection
   ======================================== */
.phone-models-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.phone-category-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.phone-category-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-accent);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.phone-models-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.iphone-tab-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}
.iphone-tab-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: rgba(0, 212, 255, 0.05);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
}
.iphone-tab-btn:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}
.iphone-tab-btn.active {
    border-color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.15);
    color: var(--accent-cyan);
}

@media (max-width: 480px) {
    .phone-models-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
    }

    .phone-card {
        padding: var(--spacing-sm);
        min-height: 110px;
    }

    .phone-image {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-xs);
    }

    .phone-info h3 {
        font-size: 0.65rem;
        line-height: 1.2;
    }

    .phone-storage {
        font-size: 0.6rem;
    }

    .phone-price {
        font-size: 0.65rem;
        white-space: nowrap;
    }

    .phone-check {
        width: 16px;
        height: 16px;
        font-size: 0.5rem;
        top: 4px;
        right: 4px;
    }

    .pagination {
        gap: var(--spacing-xs);
    }

    .page-btn {
        min-width: 28px;
        height: 28px;
        font-size: 0.75rem;
    }
}

/* Pagination Styles */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.page-btn {
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    /* Mobile touch support */
    -webkit-tap-highlight-color: rgba(0, 212, 255, 0.2);
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
}

.page-btn:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: translateY(-2px);
    box-shadow: var(--glow-cyan);
}

.page-btn.active {
    background: var(--accent-gradient);
    border-color: var(--accent-cyan);
    color: var(--text-primary);
    font-weight: 600;
}

.percent-display {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.1);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--accent-cyan);
    display: inline-block;
}

/* Down Payment % Buttons (Locked 30/35/40) */
.dp-percent-btns {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.dp-percent-btn {
    min-width: 56px;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: not-allowed;
    transition: all var(--transition-normal);
    -webkit-tap-highlight-color: transparent;
    pointer-events: none;
}

.dp-percent-btn:hover {
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.dp-percent-btn.active {
    background: var(--accent-gradient);
    border-color: var(--accent-cyan);
    color: var(--text-primary);
    cursor: not-allowed;
    pointer-events: none;
}

.phone-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    /* Mobile touch support */
    -webkit-tap-highlight-color: rgba(0, 212, 255, 0.2);
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
    /* Fixed height for consistent price alignment */
    min-height: 140px;
}

.phone-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--glow-cyan);
}

/* Active state for mobile tap */
.phone-card:active {
    transform: scale(0.98);
    border-color: var(--accent-cyan);
}

.phone-card.selected {
    border-color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.1);
}

.phone-image {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.phone-info {
    text-align: center;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    justify-content: space-between;
    width: 100%;
}

.phone-info h3 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: auto;
}

.phone-price {
    color: var(--accent-cyan);
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: auto;
    padding-top: var(--spacing-xs);
    white-space: nowrap;
}

.phone-check {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 24px;
    height: 24px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    opacity: 0;
    transform: scale(0);
    transition: all var(--transition-normal);
}

.phone-card.selected .phone-check {
    opacity: 1;
    transform: scale(1);
}

/* ========================================
   Calculator Section
   ======================================== */
.calculator-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.calc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.calc-row:last-child {
    border-bottom: none;
}

.calc-row.highlight {
    background: rgba(0, 212, 255, 0.1);
    margin: var(--spacing-sm) calc(-1 * var(--spacing-lg));
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
}

.calc-value {
    font-weight: 600;
    font-size: 1.125rem;
}

.calc-value.accent {
    color: var(--accent-cyan);
}

.down-payment-slider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.down-payment-slider input[type="range"] {
    width: 120px;
    height: 4px;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    outline: none;
    -webkit-appearance: none;
}

.down-payment-slider input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent-gradient);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--glow-cyan);
    transition: all var(--transition-normal);
}

.down-payment-slider input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}



.percent-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

#downPaymentInput {
    width: 80px;
    padding: var(--spacing-xs) var(--spacing-sm);
    padding-right: 20px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-weight: 600;
    text-align: right;
    -moz-appearance: textfield;
}

#downPaymentInput::-webkit-outer-spin-button,
#downPaymentInput::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.percent-symbol {
    position: absolute;
    right: 8px;
    color: var(--accent-cyan);
    font-weight: 600;
    pointer-events: none;
}

/* ========================================
   Installment Options
   ======================================== */
.installment-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.installment-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.installment-card:hover {
    border-color: var(--border-hover);
}

.installment-card.selected {
    border-color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.1);
}

.installment-card .months {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.installment-card .months span {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-secondary);
}

.monthly-payment {
    font-size: 0.75rem;
    color: var(--accent-cyan);
    margin-top: var(--spacing-xs);
}

/* ========================================
   Summary Card
   ======================================== */
.summary-card {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 102, 255, 0.1) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.summary-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    font-size: 0.875rem;
}

.summary-row.total {
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-md);
    font-weight: 600;
    font-size: 1rem;
}

.summary-row .accent {
    color: var(--accent-cyan);
    font-size: 1.25rem;
}

/* ========================================
   Terms & Conditions
   ======================================== */
.terms-group {
    margin-top: var(--spacing-md);
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: 0.875rem;
}

.checkbox-container input {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    position: relative;
    transition: all var(--transition-normal);
}

.checkbox-container input:checked+.checkmark {
    background: var(--accent-gradient);
    border-color: var(--accent-cyan);
}

.checkbox-container input:checked+.checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.75rem;
    color: var(--text-primary);
}

.terms-link {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.terms-link:hover {
    color: var(--text-accent);
    text-decoration: underline;
}

/* ========================================
   Submit Button
   ======================================== */
.submit-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.submit-btn:hover::before {
    left: 100%;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

.submit-btn:active {
    transform: translateY(-1px);
}

.btn-icon {
    transition: transform var(--transition-normal);
}

.submit-btn:hover .btn-icon {
    transform: translateX(5px);
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.submit-btn.loading .btn-text,
.submit-btn.loading .btn-icon {
    display: none;
}

.submit-btn.loading .btn-loader {
    display: block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ========================================
   Login Link
   ======================================== */
.login-link {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.login-link a {
    color: var(--accent-cyan);
    text-decoration: none;
    font-weight: 500;
    margin-left: var(--spacing-xs);
    transition: color var(--transition-normal);
}

.login-link a:hover {
    color: var(--text-accent);
    text-decoration: underline;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    margin-top: var(--spacing-2xl);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* ========================================
   Modal
   ======================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--spacing-md);
}

.modal.show {
    display: flex;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    max-width: 400px;
    width: 100%;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.modal-icon.success {
    background: linear-gradient(135deg, #00d4ff 0%, #0066ff 100%);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.modal-icon.error {
    background: linear-gradient(135deg, #ff4d4d 0%, #ff0000 100%);
    box-shadow: 0 0 20px rgba(255, 77, 77, 0.5);
}

.modal h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.modal p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.modal-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-width: 120px;
}

.modal-btn.error-btn {
    background: linear-gradient(90deg, #ff4d4d 0%, #ff0000 100%);
    box-shadow: 0 4px 15px rgba(255, 0, 0, 0.3);
}

.modal-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow-cyan);
}

.modal-btn.error-btn:hover {
    box-shadow: 0 6px 20px rgba(255, 0, 0, 0.5);
}

.modal-btn.line-btn {
    background: linear-gradient(135deg, #06C755 0%, #00B900 100%);
    box-shadow: 0 4px 15px rgba(6, 199, 85, 0.4);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.modal-btn.line-btn:hover {
    background: linear-gradient(135deg, #00E560 0%, #06C755 100%);
    box-shadow: 0 6px 25px rgba(6, 199, 85, 0.6);
    transform: translateY(-3px);
}

/* Variant Selection Modal */
.variant-modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 85vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.variant-modal-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(255,255,255,0.1);
    color: var(--text-primary);
    font-size: 1.5rem;
    line-height: 1;
    border-radius: var(--radius-sm);
    cursor: pointer;
}
.variant-modal-close:hover {
    background: rgba(255,255,255,0.2);
}
.variant-modal-body {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--spacing-sm);
    overflow-y: auto;
    padding: var(--spacing-sm);
}
.variant-modal-body .variant-card {
    cursor: pointer;
}

/* ========================================
   Responsive Design
   ======================================== */

/* Tablets */
@media (max-width: 768px) {
    :root {
        font-size: 15px;
    }

    .container {
        padding: var(--spacing-lg) var(--spacing-md);
        padding-top: 70px;
    }

    .card {
        padding: var(--spacing-lg);
    }

    .phone-models {
        grid-template-columns: repeat(2, 1fr);
    }

    .installment-options {
        grid-template-columns: repeat(3, 1fr);
    }

    .dual-input {
        grid-template-columns: 1fr;
    }
}

/* Mobile */
@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }

    .lang-toggle {
        top: var(--spacing-md);
        right: var(--spacing-md);
    }

    .container {
        padding: var(--spacing-md);
        padding-top: 60px;
    }

    .logo-icon {
        width: 50px;
        height: 50px;
    }

    .logo-text {
        font-size: 2rem;
    }

    .card {
        padding: var(--spacing-md);
        border-radius: var(--radius-lg);
    }

    .logo-img {
        height: 60px;
    }

    .phone-input-group {
        flex-direction: column;
    }

    .country-code {
        width: 100%;
    }

    .otp-input-group {
        flex-direction: column;
    }

    .otp-btn {
        width: 100%;
    }

    .submit-btn {
        font-size: 1rem;
    }
}

/* Extra Small Devices */
@media (max-width: 360px) {
    .phone-models {
        grid-template-columns: 1fr;
    }

    .phone-card {
        flex-direction: row;
        justify-content: flex-start;
        gap: var(--spacing-md);
    }

    .phone-image {
        margin-bottom: 0;
    }

    .phone-info {
        text-align: left;
        flex-grow: 1;
    }

    .installment-options {
        grid-template-columns: 1fr 1fr;
    }
}

/* Large Screens */
@media (min-width: 1024px) {
    .card {
        max-width: 520px;
        padding: var(--spacing-2xl);
    }

    .phone-models {
        grid-template-columns: repeat(3, 1fr);
    }

    .installment-options {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Very Large Screens */
@media (min-width: 1400px) {
    .container {
        padding: var(--spacing-2xl);
    }

    .logo-text {
        font-size: 3rem;
    }

    .logo-icon {
        width: 70px;
        height: 70px;
    }
}

/* Landscape Mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .container {
        padding-top: var(--spacing-lg);
    }

    .logo-section {
        margin-bottom: var(--spacing-md);
    }

    .logo-icon {
        width: 40px;
        height: 40px;
    }

    .logo-text {
        font-size: 1.75rem;
    }
}

/* Print Styles */
@media print {

    .bg-animation,
    .lang-toggle {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Floating LINE Button */
.line-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 64px;
    height: 64px;
    background-color: transparent;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    box-shadow: 0 0 15px rgba(6, 199, 85, 0.4);
    animation: line-pulse 2.5s ease-in-out infinite;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-decoration: none;
    border: none;
    padding: 0;
    overflow: hidden;
    cursor: pointer;
}

@keyframes line-pulse {
    0% {
        box-shadow: 0 0 8px rgba(6, 199, 85, 0.3);
    }

    50% {
        box-shadow: 0 0 20px rgba(6, 199, 85, 0.6), 0 0 10px rgba(6, 199, 85, 0.2);
    }

    100% {
        box-shadow: 0 0 8px rgba(6, 199, 85, 0.3);
    }
}

.line-float:hover {
    transform: scale(1.1) translateY(-5px);
}

.line-float img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

@media (max-width: 480px) {
    .line-float {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }

    .line-float svg {
        width: 28px;
        height: 28px;
    }
}