/* ===== Design Tokens ===== */
:root {
    --blue: #0088cc;
    --blue-hover: #006da3;
    --blue-light: rgba(0, 136, 204, 0.08);
    --blue-border: rgba(0, 136, 204, 0.25);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: 0.2s ease;
}

/* ===== Light Theme ===== */
[data-theme="light"] {
    --bg-page: #f5f6f8;
    --bg-card: #ffffff;
    --bg-input: #f0f1f3;
    --bg-input-focus: #e8e9ec;
    --bg-nav: rgba(255, 255, 255, 0.85);
    --text-primary: #111111;
    --text-secondary: #5c5c5c;
    --text-muted: #999999;
    --border: #e2e2e2;
    --border-active: var(--blue);
    --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
    --shadow-btn: 0 2px 8px rgba(0,136,204,0.2);
    --pill-bg: #e8e9ec;
    --pill-active-bg: var(--blue);
    --pill-active-text: #fff;
    --pill-text: var(--text-secondary);
}

/* ===== Dark Theme ===== */
[data-theme="dark"] {
    --bg-page: #0e0e10;
    --bg-card: #1a1a1e;
    --bg-input: #222228;
    --bg-input-focus: #2a2a32;
    --bg-nav: rgba(14, 14, 16, 0.9);
    --text-primary: #e8e8ea;
    --text-secondary: #9a9aa0;
    --text-muted: #5c5c62;
    --border: #2a2a30;
    --border-active: var(--blue);
    --shadow-card: 0 1px 3px rgba(0,0,0,0.2), 0 4px 16px rgba(0,0,0,0.15);
    --shadow-btn: 0 2px 12px rgba(0,136,204,0.25);
    --pill-bg: #2a2a32;
    --pill-active-bg: var(--blue);
    --pill-active-text: #fff;
    --pill-text: var(--text-secondary);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background var(--transition), color var(--transition);
}

.container { max-width: 560px; margin: 0 auto; padding: 0 1.25rem; }

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    z-index: 100;
    padding: 0.6rem 0;
    background: var(--bg-nav);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}

.nav-container {
    max-width: 960px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}
.logo span { color: var(--blue); }

.nav-right {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.nav-toggles {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* ===== Pill Toggle (Language & Currency) ===== */
.pill-toggle {
    display: inline-flex;
    align-items: center;
    background: var(--pill-bg);
    border: none;
    border-radius: 20px;
    padding: 2px;
    cursor: pointer;
    font-family: inherit;
    transition: background var(--transition);
}

.pill-option {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 10px;
    border-radius: 18px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--pill-text);
    transition: all var(--transition);
    -webkit-user-select: none;
    user-select: none;
    line-height: 1.4;
}

.pill-option.active {
    background: var(--pill-active-bg);
    color: var(--pill-active-text);
}

/* ===== Icon Toggle (Theme) ===== */
.icon-toggle {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: var(--text-secondary);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    transition: all var(--transition);
}
.icon-toggle:hover { border-color: var(--blue); color: var(--blue); }

/* ===== Back Link ===== */
.back-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.35rem 0;
    border-radius: var(--radius-sm);
    transition: color var(--transition);
    width: 105px;
    flex-shrink: 0;
}
.back-link:hover { color: var(--blue); }

/* ===== Page ===== */
.donate-page { padding: 90px 0 20px; }

/* ===== Header ===== */
.donate-header { text-align: center; margin-bottom: 2rem; }

.header-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px; height: 52px;
    border-radius: 50%;
    background: var(--blue-light);
    margin-bottom: 0.75rem;
}
.header-icon i { font-size: 1.3rem; color: var(--blue); }

.donate-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
    letter-spacing: -0.5px;
}
.donate-header h1 span { color: var(--blue); }

.subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    max-width: 400px;
    margin: 0 auto;
}

/* ===== Card ===== */
.donate-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: background var(--transition), border-color var(--transition);
}

/* ===== Sections ===== */
.card-section {
    margin-bottom: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border);
}
.card-section.last { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }

.section-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.85rem;
    font-weight: 600;
    font-size: 0.85rem;
}
.section-label em {
    color: var(--text-muted);
    font-weight: 400;
    font-size: 0.75rem;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px; height: 22px;
    border-radius: 50%;
    background: var(--blue);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* ===== Amount Grid ===== */
.amount-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin-bottom: 0.6rem;
}

.amount-btn {
    padding: 0.65rem;
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}
.amount-btn:hover { border-color: var(--blue-border); background: var(--blue-light); }
.amount-btn.active { border-color: var(--blue); background: var(--blue-light); color: var(--blue); }

/* ===== Inputs ===== */
.custom-amount-wrapper { margin-bottom: 0.6rem; }

.custom-amount-wrapper input,
.text-input {
    width: 100%;
    padding: 0.65rem 0.85rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
    outline: none;
    transition: all var(--transition);
}
.custom-amount-wrapper input:focus,
.text-input:focus { border-color: var(--blue); background: var(--bg-input-focus); }
.custom-amount-wrapper input::placeholder,
.text-input::placeholder { color: var(--text-muted); }

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
input[type="number"] { -moz-appearance: textfield; appearance: textfield; }

/* ===== Amount Display ===== */
.amount-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.65rem 0.85rem;
    background: var(--blue-light);
    border: 1px solid var(--blue-border);
    border-radius: var(--radius-md);
}
.amount-display span:first-child { color: var(--text-secondary); font-size: 0.85rem; font-weight: 500; }
.amount-value { font-size: 1.15rem; font-weight: 700; color: var(--blue); }

/* ===== Payment Methods ===== */
.payment-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin-bottom: 1rem;
}
.method-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    padding: 0.6rem 0.25rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}
.method-item i { font-size: 1rem; color: var(--blue); }
.method-item span { font-size: 0.65rem; color: var(--text-secondary); font-weight: 500; }

/* ===== Donate Button ===== */
.donate-btn {
    width: 100%;
    padding: 0.8rem;
    background: var(--blue);
    border: none;
    border-radius: var(--radius-md);
    color: #ffffff;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow-btn);
    margin-bottom: 0.6rem;
}
.donate-btn:hover { background: var(--blue-hover); }
.donate-btn:active { transform: scale(0.99); }
.donate-btn.loading .btn-content { display: none; }
.donate-btn.loading .btn-loader { display: inline !important; }

/* ===== Security & Trust ===== */
.security-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
}
.security-note i { color: var(--blue); font-size: 0.75rem; }

.trust-section {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 5px;
    padding: 0.5rem 0;
}
.trust-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 500;
}
.trust-item i { font-size: 0.8rem; opacity: 0.5; }

/* ===== Footer ===== */
footer {
    padding: 0.75rem 0;
    text-align: center;
    border-top: 1px solid var(--border);
    margin-top: 0.5rem;
    transition: border-color var(--transition);
}
footer p { color: var(--text-muted); font-size: 0.75rem; }
footer a { color: var(--blue); text-decoration: none; font-weight: 500; }
footer a:hover { text-decoration: underline; }

/* ===== Toast ===== */
.toast {
    position: fixed;
    top: 60px; left: 50%;
    transform: translateX(-50%) translateY(-12px);
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 0.65rem 1rem;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.8rem;
    font-weight: 500;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    box-shadow: var(--shadow-card);
    max-width: 90vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }
.toast.error { border-color: #e53935; }
.toast.error i { color: #e53935; }
.toast.success { border-color: #43a047; }
.toast.success i { color: #43a047; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .donate-page { padding: 80px 0 16px; }
    .donate-header { margin-bottom: 1.5rem; }
    .donate-header h1 { font-size: 1.4rem; }
    .subtitle { font-size: 0.85rem; }
    .back-link { width: 90px; font-size: 0.75rem; }
}

@media (max-width: 600px) {
    .donate-page { padding: 75px 0 12px; }
    .donate-header h1 { font-size: 1.3rem; }
    .donate-card { padding: 1.1rem; border-radius: 16px; }
    .back-link span { display: none; }
    .back-link { width: auto; min-width: 32px; }
    .trust-section { gap: 1rem; }
    .pill-option { padding: 3px 7px; font-size: 0.65rem; }
    .nav-right { gap: 0.3rem; }
    .icon-toggle { width: 28px; height: 28px; font-size: 0.7rem; }
    .donors-stats { gap: 0.5rem; }
    .stat-value { font-size: 1.1rem; }
}

@media (max-width: 360px) {
    .container { padding: 0 0.75rem; }
    .donate-card { padding: 0.9rem; }
    .amount-grid { gap: 0.35rem; }
    .amount-btn { padding: 0.5rem; font-size: 0.8rem; }
    .payment-methods { gap: 0.35rem; }
    .method-item { padding: 0.5rem 0.15rem; }
    .pill-option { padding: 2px 6px; font-size: 0.6rem; }
}

/* ===== Donors Section ===== */
.donors-section {
    margin-top: 2rem;
    padding-top: 1.5rem;
}

.donors-header {
    text-align: center;
    margin-bottom: 1.25rem;
}

.donors-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px; height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0,136,204,0.12), rgba(0,136,204,0.04));
    margin-bottom: 0.5rem;
}
.donors-icon i { font-size: 1.1rem; color: var(--blue); }

.donors-header h2 {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.3px;
    margin-bottom: 0.2rem;
}

.donors-subtitle {
    color: var(--text-muted);
    font-size: 0.78rem;
}

/* Stats */
.donors-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
    margin-bottom: 1rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0.85rem 0.75rem;
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: all var(--transition);
}

.stat-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--blue);
    letter-spacing: -0.5px;
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 0.15rem;
}

/* Donor list — auto-scroll container */
.donors-list-wrapper {
    position: relative;
    max-height: 180px;
    overflow: hidden;
}

/* Fade masks top & bottom */
.donors-list-wrapper::before,
.donors-list-wrapper::after {
    content: '';
    position: absolute;
    left: 0; right: 0;
    height: 32px;
    z-index: 2;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.donors-list-wrapper::before {
    top: 0;
    background: linear-gradient(to bottom, var(--bg-page), transparent);
}
.donors-list-wrapper::after {
    bottom: 0;
    background: linear-gradient(to top, var(--bg-page), transparent);
}

.donors-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    max-height: 180px;
    overflow-y: auto;
    scroll-behavior: smooth;
    user-select: none;
    -webkit-user-select: none;
    cursor: default;

    /* Hide scrollbar */
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.donors-list::-webkit-scrollbar { display: none; }

.donor-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.7rem 0.85rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition), box-shadow var(--transition);
    animation: fadeInUp 0.4s ease forwards;
    opacity: 0;
    user-select: none;
    -webkit-user-select: none;
    flex-shrink: 0;
}
.donor-item:hover {
    border-color: var(--blue-border);
    box-shadow: 0 2px 8px rgba(0,136,204,0.08);
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.donor-avatar {
    width: 34px; height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.75rem;
    color: #fff;
    flex-shrink: 0;
}

.donor-info {
    flex: 1;
    min-width: 0;
}

.donor-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.donor-time {
    font-size: 0.68rem;
    color: var(--text-muted);
}

.donor-amount {
    font-weight: 700;
    color: var(--blue);
    font-size: 0.85rem;
    flex-shrink: 0;
    white-space: nowrap;
}

/* Skeleton loading */
@keyframes shimmer {
    0% { background-position: -200px 0; }
    100% { background-position: 200px 0; }
}

.donor-skeleton {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.7rem 0.85rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.skeleton-avatar {
    width: 34px; height: 34px;
    border-radius: 50%;
    background: linear-gradient(90deg, var(--bg-input) 25%, var(--bg-input-focus) 50%, var(--bg-input) 75%);
    background-size: 400px 100%;
    animation: shimmer 1.2s ease-in-out infinite;
    flex-shrink: 0;
}

.skeleton-lines {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.skeleton-line {
    height: 10px;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--bg-input) 25%, var(--bg-input-focus) 50%, var(--bg-input) 75%);
    background-size: 400px 100%;
    animation: shimmer 1.2s ease-in-out infinite;
}
.skeleton-line.w60 { width: 60%; }
.skeleton-line.w40 { width: 40%; }

.skeleton-amount {
    width: 55px; height: 14px;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--bg-input) 25%, var(--bg-input-focus) 50%, var(--bg-input) 75%);
    background-size: 400px 100%;
    animation: shimmer 1.2s ease-in-out infinite;
    flex-shrink: 0;
}

/* Empty state */
.donors-empty {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-muted);
}
.donors-empty i {
    font-size: 2rem;
    opacity: 0.3;
    margin-bottom: 0.5rem;
}
.donors-empty p {
    font-size: 0.85rem;
}