/* ========= KDA Educational Theme (Dark/Light switchable) ========= */
/* We define tokens for DARK as defaults on :root,
   then override for LIGHT with [data-theme="light"]. */

:root {
    /* Core palette (DARK) */
    --kda-primary: #0a2342; /* navbar / footer */
    --kda-secondary: #1abc9c; /* accent 1 */
    --kda-accent: #3498db; /* accent 2 */
    --kda-warning: #e67e22;
    --kda-bg: #0f172a; /* page background */
    --kda-bg-card: #1e293b; /* card background */
    --kda-text: #f1f5f9; /* main text */
    --kda-muted: #94a3b8; /* muted text */

    --kda-border: #1f3351; /* component borders */
    --kda-input-bg: #0c1a2c; /* input/search bg */

    --kda-link: var(--kda-accent);
    --kda-link-hover: var(--kda-secondary);
}

/* LIGHT overrides */
[data-theme="light"] {
    --kda-primary: #ffffff;
    --kda-secondary: #0ea5e9;
    --kda-accent: #2563eb;
    --kda-warning: #f59e0b;
    --kda-bg: #f7fafc;
    --kda-bg-card: #ffffff;
    --kda-text: #0f172a;
    --kda-muted: #475569;
    --kda-border: #e2e8f0;
    --kda-input-bg: #f1f5f9;
    --kda-link: #1d4ed8;
    --kda-link-hover: #0369a1;
}

/* Global */
html, body {
    height: 100%;
}

body {
    background-color: var(--kda-bg);
    color: var(--kda-text);
    font-family: "Inter", "Cairo", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

/* Anchor defaults */
a {
    color: var(--kda-link);
    text-decoration: none;
}

    a:hover {
        color: var(--kda-link-hover);
    }

/* Navbar */
.navbar {
    background: var(--kda-primary) !important;
    border-bottom: 1px solid var(--kda-border);
}

    .navbar .navbar-brand,
    .navbar .nav-link {
        color: var(--kda-text) !important;
        font-weight: 600;
    }

        .navbar .nav-link:hover {
            color: var(--kda-secondary) !important;
        }

/* Buttons */
.btn-primary {
    background: var(--kda-accent);
    border-color: var(--kda-accent);
    color: #fff;
}

    .btn-primary:hover {
        background: var(--kda-secondary);
        border-color: var(--kda-secondary);
    }

.btn-outline-light {
    border-color: var(--kda-text);
    color: var(--kda-text);
}

    .btn-outline-light:hover {
        background: var(--kda-text);
        color: var(--kda-bg);
    }

/* Hero */
.kda-hero {
    background: linear-gradient(120deg, var(--kda-primary), var(--kda-accent));
    border-radius: 1rem;
    overflow: hidden;
    color: #fff;
    padding: 3rem 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

    .kda-hero h1 {
        font-weight: 800;
        margin-bottom: 1rem;
    }

    .kda-hero p {
        color: var(--kda-muted);
        font-size: 1.2rem;
    }

/* Cards */
.card {
    background: var(--kda-bg-card);
    border: 1px solid var(--kda-border);
    color: var(--kda-text);
    border-radius: .8rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: transform .2s ease, box-shadow .2s ease;
}

    .card:hover {
        transform: translateY(-3px);
        box-shadow: 0 10px 24px rgba(0,0,0,0.2);
    }

    .card .card-title {
        color: var(--kda-accent);
        font-weight: 600;
    }

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

    .card .price {
        color: var(--kda-secondary);
        font-weight: 700;
    }

/* Footer */
footer {
    background: var(--kda-primary);
    color: var(--kda-muted);
    padding: 1.5rem 0;
    margin-top: 2rem;
    border-top: 1px solid var(--kda-border);
}

    footer a {
        color: var(--kda-link);
    }

        footer a:hover {
            color: var(--kda-link-hover);
        }

/* Tables (Admin) */
.table {
    color: var(--kda-text);
}

    .table thead {
        background: var(--kda-primary);
    }

.table-striped > tbody > tr:nth-of-type(odd) {
    background: color-mix(in oklab, var(--kda-bg-card) 88%, black);
}

[data-theme="light"] .table-striped > tbody > tr:nth-of-type(odd) {
    background: #f8fafc;
}

/* RTL fix */
html[dir="rtl"] .navbar .ms-auto {
    margin-left: 0 !important;
    margin-right: auto !important;
}

/* === Udemy-like Search === */
.kda-search-form {
    position: relative;
}

.kda-search-input {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--kda-input-bg);
    border: 1px solid var(--kda-border);
    border-radius: 9999px;
    padding-inline: 14px;
}

    .kda-search-input:focus-within {
        border-color: var(--kda-accent);
        box-shadow: 0 0 0 3px color-mix(in oklab, var(--kda-accent) 30%, transparent);
    }

    .kda-search-input .form-control {
        background: transparent;
        border: 0;
        color: var(--kda-text);
        padding-block: 10px;
        padding-inline: 8px;
        box-shadow: none;
    }

        .kda-search-input .form-control::placeholder {
            color: var(--kda-muted);
        }

.kda-search-icon::before {
    content: "🔎";
    opacity: .8;
    font-size: 14px;
    display: inline-block;
}

html[dir="ltr"] .kda-search-icon {
    margin-right: 8px;
}

html[dir="rtl"] .kda-search-icon {
    margin-left: 8px;
}

/* Suggestions container (hidden until you wire JS) */
.kda-search-suggest {
    display: none;
}