/* ========================================
   ShareCount — Unified Design System
   ======================================== */

:root {
    /* Brand */
    --primary: #667eea;
    --primary-light: #764ba2;
    --primary-bg: #f0f6ff;
    --primary-border: #d4e4fc;

    /* Neutrals */
    --gray-50: #fafbfc;
    --gray-100: #f5f6f8;
    --gray-200: #edf0f3;
    --gray-300: #e5e8eb;
    --gray-400: #d1d6db;
    --gray-500: #adb5bd;
    --gray-600: #8b95a1;
    --gray-700: #6b7684;
    --gray-800: #4e5968;
    --gray-900: #333d4b;
    --gray-950: #191f28;

    /* Functional */
    --warning: #e85d3a;
    --warning-bg: #fff4f1;
    --success: #00c471;

    /* Surfaces */
    --bg: linear-gradient(135deg, var(--primary), var(--primary-light));
    --surface: #fff;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 24px;

    /* Type */
    --font: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--gray-900);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 24px 16px;
    -webkit-font-smoothing: antialiased;
}

/* ========== Shared Card ========== */
.card {
    width: 100%;
    max-width: 420px;
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm), var(--shadow-lg);
    overflow: hidden;
    animation: slideUp 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

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

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* ========================================
   INDEX PAGE — Input Form
   ======================================== */
.page-body {
    padding: 0;
}

/* Card inner padding */
.card__body {
    padding: 32px 28px;
}

/* --- Page Header --- */
.page-header {
    margin-bottom: 28px;
}

.page-header__title {
    font-size: 22px;
    font-weight: 700;
    color: var(--gray-950);
    letter-spacing: -0.3px;
    line-height: 1.4;
    margin-bottom: 8px;
}

.page-header__notice {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    color: var(--gray-600);
    background: var(--gray-100);
    padding: 6px 12px;
    border-radius: 20px;
    letter-spacing: 0.2px;
}

.page-header__notice svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* --- Form --- */
.form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-800);
    letter-spacing: 0.2px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    font-family: var(--font);
    color: var(--gray-900);
    background: var(--gray-50);
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    outline: none;
    transition: all 0.2s ease;
    -webkit-appearance: none;
    appearance: none;
}

.form-group input::placeholder {
    color: var(--gray-500);
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.12);
}

.form-group select {
    width: 100%;
    padding: 14px 40px 14px 16px;
    font-size: 15px;
    font-family: var(--font);
    color: var(--gray-900);
    background: var(--gray-50);
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    outline: none;
    cursor: pointer;
    transition: all 0.2s ease;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7684' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 16px;
}

.form-group select:invalid {
    color: var(--gray-500);
}

/* --- Section Divider --- */
.form-section {
    margin-top: 8px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
}

.form-section__title {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-950);
    letter-spacing: -0.2px;
    margin-bottom: 4px;
}

.form-section__desc {
    font-size: 13px;
    color: var(--gray-600);
    margin-bottom: 20px;
}

.form-section__desc a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: opacity 0.15s;
}

.form-section__desc a:hover {
    opacity: 0.7;
}

/* Inline row for 인원 / 금액 */
.form-row {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 12px;
}

/* --- Submit Button --- */
.submit-btn {
    margin-top: 8px;
    width: 100%;
    padding: 16px;
    font-size: 16px;
    font-weight: 700;
    font-family: var(--font);
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.25);
}

.submit-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(26, 115, 232, 0.35);
}

.submit-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.25);
}

/* --- Footer --- */
.page-footer {
    text-align: center;
    padding: 20px 28px 28px;
}

.page-footer p {
    font-size: 12px;
    color: var(--gray-500);
    letter-spacing: 0.1px;
}


/* ========================================
   INDEX PAGE — QR Section
   ======================================== */
#qr-section {
    animation: fadeIn 0.35s ease;
}

.qr-hero {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    padding: 32px 28px 24px;
    text-align: center;
}

.qr-hero__badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    padding: 5px 14px;
    border-radius: 20px;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.qr-hero__title {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.3px;
    margin-bottom: 4px;
}

.qr-hero__subtitle {
    font-size: 14px;
    font-weight: 400;
    opacity: 0.85;
}

.qr-body {
    padding: 28px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.qr-frame {
    width: 220px;
    height: 220px;
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 28px;
}

.qr-frame img {
    width: 100%;
    height: 100%;
    display: block;
    border-radius: 8px;
}

.qr-info {
    text-align: center;
    width: 100%;
}

.qr-info__holder-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--gray-600);
    margin-bottom: 4px;
    letter-spacing: 0.3px;
}

.qr-info__holder-name {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-950);
    margin-bottom: 12px;
}

.qr-info__warning {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    font-weight: 500;
    color: var(--warning);
    background: var(--warning-bg);
    padding: 8px 16px;
    border-radius: 10px;
}


/* ========================================
   TRANSFER PAGE — Payment Actions
   ======================================== */
.transfer-body {
    flex-direction: column;
    align-items: center;
}

.transfer-card {
    width: 100%;
    max-width: 420px;
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm), var(--shadow-lg);
    overflow: hidden;
    animation: slideUp 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

/* --- Hero Section --- */
.transfer-hero {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    padding: 32px 28px 28px;
}

.transfer-label {
    font-size: 13px;
    font-weight: 400;
    opacity: 0.8;
    letter-spacing: 0.4px;
    margin-bottom: 6px;
}

.transfer-name {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.3px;
    margin-bottom: 14px;
}

.transfer-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    padding: 5px 12px;
    border-radius: 20px;
    letter-spacing: 0.2px;
}

/* --- Amount Cards --- */
.transfer-amounts {
    padding: 24px 24px 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.amount-card {
    border-radius: 16px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.amount-card--highlight {
    background: var(--primary-bg);
    border: 1px solid var(--primary-border);
}

.amount-card__label {
    font-size: 12px;
    font-weight: 500;
    color: var(--gray-700);
    letter-spacing: 0.3px;
}

.amount-card__value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.amount-card__value small {
    font-size: 18px;
    font-weight: 500;
    margin-left: 2px;
}

.amount-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.amount-card--sub {
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
}

.amount-card__value--small {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    letter-spacing: -0.3px;
}

.amount-card__value--small small {
    font-size: 14px;
    font-weight: 500;
    margin-left: 2px;
    color: var(--gray-700);
}

/* --- Divider --- */
.transfer-divider {
    border: none;
    border-top: 1px solid var(--gray-200);
    margin: 24px 24px 0;
}

/* --- Action Buttons --- */
.transfer-actions {
    padding: 20px 24px 8px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.transfer-actions__title {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-600);
    letter-spacing: 0.3px;
    margin-bottom: 4px;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 16px 18px;
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-900);
    text-decoration: none;
    background: var(--surface);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font);
    transition: all 0.2s ease;
}

.action-btn:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.action-btn:active {
    transform: translateY(0);
    box-shadow: none;
}

.action-btn__icon {
    width: 28px;
    height: 28px;
    object-fit: contain;
    border-radius: 6px;
    flex-shrink: 0;
}

.action-btn__icon-svg {
    width: 24px;
    height: 24px;
    color: var(--gray-700);
    flex-shrink: 0;
}

.action-btn__arrow {
    width: 18px;
    height: 18px;
    margin-left: auto;
    color: var(--gray-500);
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.action-btn:hover .action-btn__arrow {
    transform: translateX(2px);
    color: var(--gray-700);
}

.action-btn span {
    flex: 1;
    text-align: left;
}

/* Brand hover accents */
.action-btn--toss:hover {
    border-color: #3182f6;
    background: #f5f9ff;
}

.action-btn--kakao:hover {
    border-color: #fee500;
    background: #fffde6;
}

.action-btn--copy:hover {
    border-color: var(--gray-400);
    background: var(--gray-100);
}

/* --- Account Info Footer --- */
.transfer-account-info {
    padding: 16px 24px 24px;
    text-align: center;
}

.transfer-account-info span {
    font-size: 13px;
    color: var(--gray-500);
    font-weight: 400;
    letter-spacing: 0.3px;
}

/* --- Promo Banner CTA --- */
.promo-banner {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    max-width: 420px;
    margin-top: 16px;
    padding: 18px 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    text-decoration: none;
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 16px rgba(26, 115, 232, 0.3);
    transition: all 0.25s ease;
    animation: slideUp 0.55s cubic-bezier(0.22, 1, 0.36, 1) 0.15s both;
}

.promo-banner:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(26, 115, 232, 0.4);
}

.promo-banner:active {
    transform: translateY(0);
}

.promo-banner__emoji {
    font-size: 28px;
    line-height: 1;
    flex-shrink: 0;
}

.promo-banner__text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

.promo-banner__text strong {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: -0.2px;
}

.promo-banner__text span {
    font-size: 12px;
    font-weight: 400;
    opacity: 0.85;
}

.promo-banner__arrow {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    opacity: 0.7;
    transition: transform 0.2s ease;
}

.promo-banner:hover .promo-banner__arrow {
    transform: translateX(3px);
    opacity: 1;
}

/* ========================================
   Toast Notification (Shared)
   ======================================== */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(16px);
    background: var(--gray-900);
    color: #fff;
    padding: 12px 24px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.16);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    z-index: 1000;
    pointer-events: none;
}

.toast--visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ========================================
   Install Popup
   ======================================== */
#install-popup {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    width: calc(100% - 32px);
    max-width: 400px;
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    padding: 20px;
    z-index: 9999;
    display: none;
    /* Hidden by default */
    align-items: center;
    gap: 16px;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

#install-popup.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    display: flex;
}

.install-popup__icon {
    width: 48px;
    height: 48px;
    background: var(--gray-100);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.install-popup__icon img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.install-popup__content {
    flex: 1;
}

.install-popup__title {
    font-size: 15px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 2px;
}

.install-popup__desc {
    font-size: 12px;
    color: var(--gray-600);
}

.install-popup__actions {
    display: flex;
    gap: 8px;
}

.install-btn {
    padding: 8px 16px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font);
}

.install-close-btn {
    padding: 8px;
    background: transparent;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}