:root {
    --bg: #0b0d14;
    --bg-alt: #12151f;
    --surface: #1a1e2e;
    --surface-2: #232838;
    --border: #2a3042;
    --text: #e7eaf4;
    --text-muted: #8a91a8;
    --text-dim: #5c6378;
    --primary: #6366f1;
    --primary-hover: #7c7ff5;
    --primary-glow: rgba(99, 102, 241, 0.35);
    --accent: #ec4899;
    --success: #10b981;
    --danger: #ef4444;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
    --trans: 0.2s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

input,
select,
textarea {
    font-family: inherit;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.hidden {
    display: none !important;
}

.muted {
    color: var(--text-muted);
}

.muted-small {
    color: var(--text-dim);
    font-size: 13px;
}

.gradient-text {
    background: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* HEADER */
.header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(11, 13, 20, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.header--compact .header__inner {
    height: 60px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 18px;
}

.logo__icon {
    font-size: 22px;
    background: linear-gradient(135deg, #6366f1, #ec4899);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav {
    display: flex;
    gap: 4px;
}

.nav__link {
    padding: 8px 16px;
    border-radius: 8px;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 14px;
    transition: var(--trans);
}

.nav__link:hover,
.nav__link.active {
    color: var(--text);
    background: var(--surface);
}

.burger {
    display: none;
    width: 32px;
    height: 32px;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
}

.burger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    margin: 0 auto;
    transition: var(--trans);
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    transition: var(--trans);
    white-space: nowrap;
    border: 1px solid transparent;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn--primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn--primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 25px var(--primary-glow);
}

.btn--ghost {
    background: var(--surface);
    color: var(--text);
    border-color: var(--border);
}

.btn--ghost:hover:not(:disabled) {
    background: var(--surface-2);
    border-color: var(--primary);
}

.btn--lg {
    padding: 14px 28px;
    font-size: 15px;
}

.btn--sm {
    padding: 7px 14px;
    font-size: 13px;
}

/* FOOTER */
.footer {
    border-top: 1px solid var(--border);
    padding: 60px 0 24px;
    margin-top: 80px;
    background: var(--bg-alt);
}

.footer__inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer__col h4 {
    font-size: 14px;
    margin-bottom: 16px;
    color: var(--text);
}

.footer__col a {
    display: block;
    color: var(--text-muted);
    padding: 4px 0;
    font-size: 14px;
    transition: var(--trans);
}

.footer__col a:hover {
    color: var(--text);
}

.footer__about {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 14px;
    max-width: 320px;
}

.footer__bottom {
    display: flex;
    justify-content: space-between;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 13px;
}

.footer__bottom a:hover {
    color: var(--text);
}

/* TOAST */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--primary);
    padding: 14px 20px;
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    animation: slideIn 0.3s ease;
    font-size: 14px;
    max-width: 360px;
}

.toast--success {
    border-left-color: var(--success);
}

.toast--error {
    border-left-color: var(--danger);
}

@keyframes slideIn {
    from {
        transform: translateX(120%);
    }

    to {
        transform: translateX(0);
    }
}

/* MOBILE */
@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .burger {
        display: flex;
    }

    .footer__inner {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }

    .footer__bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}