:root,
html[data-theme="light"],
body[data-theme="light"],
.theme-light {
    --primary: #1f5f4a;
    --primary-dark: #164535;
    --primary-light: #e7f2ed;
    --accent: #d8a72c;
    --background: #eef4f1;
    --text-title: #164535;
    --text: #1d2b25;
    --muted: #61716a;
    --card-bg: rgba(255, 255, 255, 0.98);
    --card-border: rgba(255, 255, 255, 0.4);
    --card-shadow: 0 18px 55px rgba(0, 0, 0, 0.28);
    --role-bg: #ffffff;
    --role-border: #d9e3de;
    --role-hover-bg: #f5faf7;
    --border: #e1e9e4;
    --btn-toggle-bg: #ffffff;
    --btn-toggle-color: #1f5f4a;
    --bg-overlay: rgba(235, 244, 239, 0.88);
}

:root[data-theme="dark"],
html[data-theme="dark"],
body[data-theme="dark"],
.theme-dark {
    --primary: #34d399;
    --primary-dark: #10b981;
    --primary-light: #142e22;
    --accent: #fbbf24;
    --background: #09100c;
    --text-title: #ffffff;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --card-bg: rgba(16, 26, 20, 0.96);
    --card-border: rgba(52, 211, 153, 0.2);
    --card-shadow: 0 20px 60px rgba(0, 0, 0, 0.75);
    --role-bg: #0d1712;
    --role-border: #23372c;
    --role-hover-bg: #14251c;
    --border: #23372c;
    --btn-toggle-bg: #15241b;
    --btn-toggle-color: #fbbf24;
    --bg-overlay: rgba(5, 12, 8, 0.94);
}

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

body {
    min-height: 100vh;
    font-family: "Poppins", sans-serif;
    color: var(--text);
    background:
        linear-gradient(var(--bg-overlay), var(--bg-overlay)),
        url("https://images.unsplash.com/photo-1521587760476-6c12a4b040da?auto=format&fit=crop&w=1600&q=80") center / cover no-repeat;
    transition: background 0.3s ease, color 0.3s ease;
}

.landing-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 32px 16px;
}

.welcome-card {
    width: min(100%, 560px);
    padding: 42px;
    text-align: center;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(10px);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.logo {
    width: 76px;
    height: 76px;
    display: grid;
    place-items: center;
    margin: 0 auto 18px;
    color: #ffffff;
    font-size: 32px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    border-radius: 50%;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.subtitle {
    margin-bottom: 8px;
    color: var(--accent);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
}

h1 {
    margin-bottom: 14px;
    color: var(--text-title);
    font-size: clamp(28px, 5vw, 38px);
    line-height: 1.2;
    transition: color 0.3s ease;
}

.description {
    max-width: 430px;
    margin: 0 auto 30px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
    transition: color 0.3s ease;
}

.login-options {
    display: grid;
    gap: 14px;
}

.role-button {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 17px 18px;
    border: 1px solid var(--role-border);
    border-radius: 14px;
    color: var(--text);
    background: var(--role-bg);
    text-align: left;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.25s ease, border-color 0.25s ease;
}

.role-button:hover {
    transform: translateY(-3px);
    background: var(--role-hover-bg);
    border-color: var(--primary);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.role-button>i:first-child {
    width: 45px;
    height: 45px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    color: #ffffff;
    font-size: 19px;
}

.user-button>i:first-child {
    background: linear-gradient(135deg, #1f5f4a, #2a8366);
}

[data-theme="dark"] .user-button>i:first-child {
    background: linear-gradient(135deg, #059669, #10b981);
}

.admin-button>i:first-child {
    background: linear-gradient(135deg, #825d15, #d8a72c);
}

[data-theme="dark"] .admin-button>i:first-child {
    background: linear-gradient(135deg, #b45309, #f59e0b);
}

.role-button span {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: 2px;
}

.role-button strong {
    font-size: 15px;
    color: var(--text-title);
    transition: color 0.3s ease;
}

.role-button small {
    color: var(--muted);
    font-size: 12px;
    transition: color 0.3s ease;
}

.role-button .arrow {
    color: var(--primary);
    transition: transform 0.2s ease, color 0.2s ease;
}

.role-button:hover .arrow {
    transform: translateX(4px);
}

.register-text {
    margin-top: 25px;
    color: var(--muted);
    font-size: 13px;
    transition: color 0.3s ease;
}

.register-text a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
}

.register-text a:hover {
    text-decoration: underline;
}

.theme-toggle-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--btn-toggle-bg);
    color: var(--btn-toggle-color);
    display: grid;
    place-items: center;
    cursor: pointer;
    font-size: 17px;
    transition: background 0.3s ease, color 0.3s ease, transform 0.25s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.theme-toggle-btn:hover {
    transform: rotate(18deg) scale(1.08);
    border-color: var(--primary);
}

.floating-theme-toggle {
    position: fixed;
    top: 22px;
    right: 22px;
    z-index: 9999;
}

@media (max-width: 520px) {
    .welcome-card {
        padding: 32px 20px;
    }

    .role-button {
        padding: 14px;
    }
}