:root {
    --primary-color: #3b28cc;
    --primary-hover: #2e1ca1;
    --text-main: #2d3748;
    --text-muted: #718096;
    --input-bg: #f7fafc;
    --input-border: #e2e8f0;
    --input-focus-border: #a3bffa;
    --input-focus-shadow: rgba(66, 153, 225, 0.2);
    --bg-right: #ffffff;
}
html.dark-mode {
    --primary-color: #8b7ef8;
    --primary-hover: #a399f9;
    --text-main: #e2e8f0;
    --text-muted: #a0aec0;
    --input-bg: #2d3748;
    --input-border: #4a5568;
    --input-focus-border: #8b7ef8;
    --input-focus-shadow: rgba(139, 126, 248, 0.2);
    --bg-right: #1a202c;
}
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-right);
    color: var(--text-main);
}
h1, h2, h3, h4, h5, h6, .brand-font {
    font-family: 'Poppins', sans-serif;
}
.split-layout {
    display: flex;
    width: 100%;
    min-height: 100vh;
}
.split-left {
    flex: 1.3;
    position: relative;
    background: linear-gradient(135deg, rgba(59, 40, 204, 0.77) 0%, rgba(17, 10, 73, 0.95) 100%), url('https://images.unsplash.com/photo-1522202176988-66273c2fd55f?q=80&w=2071&auto=format&fit=crop') no-repeat center center;
    background-size: cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 4rem;
    color: #ffffff;
    overflow: hidden;
}
html.dark-mode .split-left {
    background: linear-gradient(135deg, rgba(26, 32, 44, 0.85) 0%, rgba(10, 10, 15, 0.98) 100%), url('https://images.unsplash.com/photo-1522202176988-66273c2fd55f?q=80&w=2071&auto=format&fit=crop') no-repeat center center;
    background-size: cover;
}
.shape-blob {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
}
.shape-1 { width: 400px; height: 400px; top: -100px; left: -100px; }
.shape-2 { width: 300px; height: 300px; bottom: -50px; right: -50px; }
.split-left .content-wrapper {
    position: relative;
    z-index: 2;
    max-width: 600px;
    animation: fadeSlideUp 0.8s ease-out;
}
.brand-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(5px);
}
.split-right {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-right);
    padding: 2rem;
    position: relative;
    z-index: 5;
}
.form-container {
    width: 100%;
    max-width: 400px;
    animation: fadeIn 0.6s ease-out 0.2s both;
}
.form-control {
    border-radius: 12px;
    padding: 1rem 1.2rem;
    font-size: 0.95rem;
    border: 2px solid var(--input-border);
    background-color: var(--input-bg);
    color: var(--text-main);
    transition: all 0.3s ease;
    box-shadow: none !important;
}
.form-control:focus {
    background-color: var(--bg-right);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--input-focus-shadow) !important;
}
.form-floating > label {
    padding: 1rem 1.2rem;
    color: var(--text-muted);
    font-weight: 400;
}
.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label {
    color: var(--primary-color);
    font-weight: 600;
    transform: scale(0.85) translateY(-0.75rem) translateX(0.15rem);
}
.btn-login {
    padding: 0.9rem;
    border-radius: 12px;
    background-color: var(--primary-color);
    border: none;
    transition: all 0.3s ease;
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: 0.3px;
    box-shadow: 0 4px 15px rgba(59, 40, 204, 0.3);
    margin-top: 1rem;
}
.btn-login:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 40, 204, 0.4);
}
.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}
.text-muted {
    color: var(--text-muted) !important;
}
a.text-decoration-none {
    color: var(--primary-color);
    font-weight: 500;
    transition: color 0.2s ease;
}
a.text-decoration-none:hover {
    color: var(--primary-hover);
    text-decoration: underline !important;
}
.password-toggle-icon {
    position: absolute;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    cursor: pointer;
    color: #a0aec0;
    z-index: 10;
    transition: color 0.2s ease;
}
.password-toggle-icon:hover { color: var(--primary-color); }

html.dark-mode .modal-content { background-color: #2d3748 !important; color: var(--text-main); }
html.dark-mode .modal-header, html.dark-mode .modal-footer { border-color: #4a5568 !important; }
html.dark-mode .btn-light { background-color: #4a5568; color: #e2e8f0; border-color: #4a5568; }
html.dark-mode .btn-light:hover { background-color: #1a202c; color: #fff; }
html.dark-mode .bg-light { background-color: #2d3748 !important; }
html.dark-mode .btn-close { filter: invert(1) grayscale(100%) brightness(200%); }

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes fadeSlideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@media (max-width: 991.98px) {
    .split-layout { flex-direction: column; min-height: 100vh; }
    .split-left { flex: none; min-height: 40vh; padding: 2.5rem 1.5rem; text-align: center; border-bottom-left-radius: 1rem; border-bottom-right-radius: 1rem; box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
    .shape-1, .shape-2 { display: none; }
    .split-left .content-wrapper { margin: 0 auto; }
    .split-left h1 { font-size: 2rem !important; }
    .split-left .lead { font-size: 1rem; }
    .split-right { flex: 1; align-items: flex-start; padding: 2.5rem 1.5rem; ; }
}