:root {
    --blue-1: #6D94C5; --blue-2: #86A7CF; --blue-3: #9FBAD9; --blue-4: #B8CDE3; --blue-5: #D2E0ED;
    --blue2-1: #4F73B8; --purple-1: #7569C8; --purple-2: #8C84D4; --purple-3: #A39FE0; --purple-5: #D4D4F7;
    --pink-1: #C46EA6; --pink-2: #D086B6; --pink-3: #DCA0C7; --pink-5: #F5D8EE;
    
    --bg-page: #f8fafc;
    --bg-grad-1: color-mix(in srgb, var(--blue-2) 35%, transparent);
    --bg-grad-2: color-mix(in srgb, var(--purple-5) 28%, transparent);
    --card-bg: #ffffff;
    --card-border: color-mix(in srgb, var(--blue-2) 28%, transparent);
    
    --accent-main: var(--blue2-1);
    --accent-main-text: #ffffff;
    --text-main: #0f172a;
    --text-dim: #64748b;
    
    --error-bg: color-mix(in srgb, var(--pink-5) 55%, transparent);
    --error-border: color-mix(in srgb, var(--pink-1) 38%, transparent);
    --error-text: var(--pink-1);
    
    --radius-xl: 24px;
    --radius-md: 12px;
    --transition-fast: .2s ease;
    
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    
    --focus-ring:
        0 0 0 4px color-mix(in srgb, var(--blue2-1) 22%, transparent),
        0 0 0 7px color-mix(in srgb, var(--pink-2) 12%, transparent);
    
    --input-bg: #f8fafc;
    --input-border: color-mix(in srgb, var(--blue2-1) 24%, transparent);
    
    --button-shadow:
        0 16px 32px color-mix(in srgb, var(--blue2-1) 30%, transparent),
        0 10px 26px color-mix(in srgb, var(--blue2-1) 16%, transparent),
        0 4px 12px rgba(0, 0, 0, .1);
    --button-shadow-hover:
        0 22px 40px color-mix(in srgb, var(--blue2-1) 40%, transparent),
        0 14px 34px color-mix(in srgb, var(--blue2-2) 24%, transparent),
        0 6px 16px rgba(0, 0, 0, .15);

    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Inter", Roboto, "Segoe UI", sans-serif;
    color-scheme: light;
}

body.dark {
    --bg-page: #0f172a;
    --bg-grad-1: color-mix(in srgb, var(--blue2-1) 16%, transparent);
    --bg-grad-2: color-mix(in srgb, var(--purple-1) 14%, transparent);
    --card-bg: #1e293b;
    --card-border: color-mix(in srgb, var(--blue-5) 14%, transparent);
    
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    
    --input-bg: #0f172a;
    --input-border: color-mix(in srgb, var(--blue-5) 18%, transparent);
    
    --card-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    
    --button-shadow: 0 16px 32px color-mix(in srgb, var(--blue2-1) 40%, transparent), 0 4px 12px rgba(0, 0, 0, .4);
    color-scheme: dark;
}

* { box-sizing: border-box; -webkit-font-smoothing: antialiased; }

body {
    margin: 0;
    height: 100vh;
    background: var(--bg-page);
    color: var(--text-main);
    overflow: hidden; 
}

.split-layout { display: flex; width: 100%; height: 100%; }

.auth-side {
    flex: 1;
    display: grid;
    place-items: center;
    padding: 2rem;
    position: relative;
    z-index: 2;
    background: var(--card-bg);
}

.auth-shell { width: 100%; max-width: 380px; }

.app-brand { text-align: center; margin-bottom: 2.5rem; }

.logo-circle {
    margin: 0 auto 1.25rem;
    display: grid; place-items: center;
}
.logo-circle img {
    width: auto; 
    flex-shrink: 0;
}

.brand-title { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.04em; margin-bottom: 0.25rem; }
.brand-sub { font-size: 0.9rem; color: var(--text-dim); }

form { display: flex; flex-direction: column; gap: 1.25rem; margin: 0; }

label { font-size: 0.8rem; font-weight: 600; margin-bottom: 0.4rem; display: block; color: var(--text-main); }
.input-wrap { display: flex; flex-direction: column; }

/* Include input[type="text"] so the styling stays when we toggle the eye icon */
input[type="email"], input[type="password"], input[type="text"] {
    width: 100%;
    appearance: none;
    border-radius: var(--radius-md);
    border: 2px solid var(--input-border);
    background: var(--input-bg);
    padding: 0.85rem 1rem;
    font-size: 0.95rem;
    color: var(--text-main);
    outline: none;
    transition: all var(--transition-fast);
}

input[type="email"]:focus, input[type="password"]:focus, input[type="text"]:focus {
    border-color: var(--accent-main);
    box-shadow: var(--focus-ring);
    background: var(--card-bg);
}

/* --- EYE ICON STYLES --- */
.password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-wrapper input {
    padding-right: 3rem; /* Make room for the icon */
}

.eye-btn {
    position: absolute;
    right: 1rem;
    background: transparent;
    border: none;
    padding: 0;
    color: var(--text-dim);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
}

.eye-btn:hover { color: var(--accent-main); }
.eye-btn svg { width: 18px; height: 18px; }

.submit-btn {
    appearance: none; border: 0; border-radius: var(--radius-md);
    background: var(--accent-main); color: var(--accent-main-text);
    font-weight: 700; font-size: 1rem; padding: 1rem;
    margin-top: 0.5rem; cursor: pointer;
    box-shadow: var(--button-shadow); transition: all var(--transition-fast);
}
.submit-btn:hover { transform: translateY(-2px); box-shadow: var(--button-shadow-hover); }

.error-msg {
    font-size: 0.8rem; font-weight: 600; color: var(--error-text);
    background: var(--error-bg); border: 1px solid var(--error-border);
    padding: 0.75rem 1rem; border-radius: var(--radius-md);
}

.hint-text {
    font-size: 0.75rem; color: var(--text-dim);
    text-align: center; margin-top: 2rem; font-weight: 500;
}

/* --- THEME TOGGLE --- */
.theme-toggle {
    position: absolute; top: 1.5rem; left: 1.5rem;
    background: transparent; border: 1px solid var(--input-border);
    border-radius: 999px; font-size: 0.8rem; color: var(--text-dim);
    cursor: pointer; padding: 0.5rem 0.8rem; display: flex; align-items: center; gap: 0.5rem;
    transition: all var(--transition-fast); z-index: 100;
}
.theme-toggle:hover { color: var(--text-main); border-color: var(--text-dim); }
.icon { width: 16px; height: 16px; display: block; }

/* --- RIGHT SIDE VISUALS --- */
.hero-side {
    flex: 1.2;
    background: 
        radial-gradient(circle at 20% 20%, var(--bg-grad-1) 0%, transparent 60%),
        radial-gradient(circle at 80% 80%, var(--bg-grad-2) 0%, transparent 60%),
        color-mix(in srgb, var(--blue-5) 85%, var(--pink-5));
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    position: relative; padding: 3rem; overflow: hidden;
}
body.dark .hero-side {
    background: 
        radial-gradient(circle at 20% 20%, var(--bg-grad-1) 0%, transparent 60%),
        radial-gradient(circle at 80% 80%, var(--bg-grad-2) 0%, transparent 50%),
        var(--bg-page);
}

.hero-content { position: relative; width: 100%; max-width: 500px; height: 400px; display: flex; align-items: center; justify-content: center; }

.mock-player {
    width: 100%; height: 280px;
    background: rgba(255, 255, 255, 0.2); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.4); border-radius: 16px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.1), 0 0 0 1px rgba(255,255,255,0.2) inset;
    display: flex; flex-direction: column; justify-content: space-between; padding: 1rem;
    position: relative; z-index: 5; animation: float 6s ease-in-out infinite;
}
body.dark .mock-player {
    background: rgba(15, 23, 42, 0.4); border: 1px solid rgba(255, 255, 255, 0.1); box-shadow: 0 30px 60px rgba(0,0,0,0.4);
}

.mock-player-header { display: flex; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }

.mock-player-body { display: grid; place-items: center; flex: 1; }
.play-button-glass {
    width: 60px; height: 60px; background: var(--accent-main); border-radius: 50%; display: flex; align-items: center; justify-content: center;
    color: white; box-shadow: var(--button-shadow); padding-left: 4px;
}
.play-button-glass svg { width: 24px; height: 24px; }

.mock-player-footer { display: flex; align-items: center; gap: 1rem; }
.progress-track { flex: 1; height: 6px; background: rgba(0,0,0,0.1); border-radius: 4px; position: relative; }
body.dark .progress-track { background: rgba(255,255,255,0.1); }
.progress-fill { width: 35%; height: 100%; background: var(--accent-main); border-radius: 4px; }
.progress-thumb { position: absolute; left: 35%; top: 50%; transform: translate(-50%, -50%); width: 12px; height: 12px; background: #fff; border-radius: 50%; box-shadow: 0 2px 4px rgba(0,0,0,0.2); }
.time-mock { font-size: 0.7rem; font-weight: 600; opacity: 0.7; }

.mock-card {
    position: absolute; background: var(--card-bg); padding: 0.75rem 1rem; border-radius: 12px;
    box-shadow: var(--card-shadow); display: flex; align-items: center; gap: 0.75rem; font-size: 0.8rem; font-weight: 600;
    z-index: 10; border: 1px solid var(--card-border);
}
.mock-card svg { width: 20px; height: 20px; }
.card-1 { top: 10%; left: -5%; animation: float 5s ease-in-out infinite reverse; }
.card-2 { bottom: 5%; right: -10%; animation: float 7s ease-in-out infinite 1s; }

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

.hero-text { text-align: center; margin-top: 2rem; position: relative; z-index: 2; }
.hero-text h2 { font-size: 2rem; font-weight: 800; letter-spacing: -0.04em; margin: 0 0 0.5rem 0; }
.hero-text p { font-size: 1.05rem; opacity: 0.8; max-width: 400px; margin: 0 auto; line-height: 1.5; }

/* --- MOBILE RESPONSIVE --- */
@media (max-width: 900px) {
    body { overflow: auto; }
    .split-layout { flex-direction: column; }
    .hero-side { display: none; }
    .auth-side { padding: 3rem 1.5rem; min-height: 100vh; background: radial-gradient(circle at 50% -20%, var(--bg-grad-1) 0%, var(--bg-page) 60%); }
    .theme-toggle { top: 1rem; right: 1rem; left: auto; }
}