:root {
    --emerald: #0a6e5e;
    --emerald-dark: #074d41;
    --emerald-light: #12917d;
    --gold: #c5973a;
    --gold-light: #e8b84b;
    --cream: #f7f3ee;
    --ink: #1a1a2e;
    --ink-muted: #4a5568;
    --white: #ffffff;
    --border: rgba(10, 110, 94, 0.15);
    --shadow: 0 25px 60px rgba(10, 110, 94, 0.12);
}

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

html,
body {
    height: 100%;
    font-family: 'DM Sans', sans-serif;
    background: var(--cream);
    overflow: hidden;
}

/* ── Layout ── */
.page {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 100vh;
}

/* ── Left panel ── */
.left-panel {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 3rem 3.5rem;
    background: var(--emerald);
    position: relative;
    overflow: hidden;
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    z-index: 2;
}

.brand-logo {
    width: 54px;
    height: 54px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    padding: 6px;
}

.brand-logo img {
    width: 100%;
    height: auto;
}

.brand-name {
    font-family: 'DM Sans', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 0.02em;
    line-height: 1.3;
}

.brand-name small {
    display: block;
    font-size: 0.7rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.left-hero {
    position: relative;
    z-index: 2;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3rem 0;
}

.gold-line {
    width: 48px;
    height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
    border-radius: 2px;
    margin-bottom: 1.5rem;
}

.left-hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2rem, 3.5vw, 2.8rem);
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 1.25rem;
}

.left-hero h1 em {
    font-style: italic;
    color: var(--gold-light);
}

.left-hero p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.75;
    max-width: 340px;
}

/* ── Right panel ── */
.right-panel {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2.5rem;
    position: relative;
}

.login-card {
    width: 100%;
    max-width: 420px;
    animation: slideUp 0.65s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(28px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* form */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.input-wrap {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--ink-muted);
    pointer-events: none;
    opacity: 0.5;
    transition: opacity 0.2s;
}

.form-input {
    width: 100%;
    padding: 13px 14px 13px 40px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.925rem;
    color: var(--ink);
    background: var(--white);
    border: 1.5px solid rgba(26, 26, 46, 0.12);
    border-radius: 10px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input::placeholder {
    color: rgba(74, 85, 104, 0.45);
}

.form-input:focus {
    border-color: var(--emerald);
    box-shadow: 0 0 0 4px rgba(10, 110, 94, 0.08);
}

.form-input:focus+.input-icon,
.input-wrap:focus-within .input-icon {
    opacity: 0.9;
    color: var(--emerald);
}

/* password toggle */
.pw-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--ink-muted);
    opacity: 0.5;
    transition: opacity 0.2s;
    padding: 0;
    display: flex;
}

.pw-toggle:hover {
    opacity: 1;
}

.password-input {
    padding-right: 42px;
}

/* error */
.error-msg {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: rgba(220, 38, 38, 0.06);
    border: 1px solid rgba(220, 38, 38, 0.2);
    border-radius: 8px;
    font-size: 0.825rem;
    color: #dc2626;
    margin-bottom: 1.25rem;
}

/* button */
.btn-login {
    width: 100%;
    padding: 14px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--white);
    background: linear-gradient(135deg, var(--emerald-dark), var(--emerald-light));
    border: none;
    border-radius: 10px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform 0.15s, box-shadow 0.15s;
    box-shadow: 0 6px 24px rgba(10, 110, 94, 0.28);
    margin-top: 0.5rem;
}

.btn-login::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.2s;
}

.btn-login:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 32px rgba(10, 110, 94, 0.34);
}

.btn-login:hover::before {
    opacity: 1;
}

.btn-login:active {
    transform: translateY(0);
}

/* footer note */
.footer-note {
    margin-top: 2rem;
    text-align: center;
    font-size: 0.75rem;
    color: rgba(74, 85, 104, 0.55);
}

/* ── Responsive ── */
@media (max-width: 820px) {

    html,
    body {
        overflow: auto;
    }

    .page {
        grid-template-columns: 1fr;
    }

    .left-panel {
        padding: 2rem;
        min-height: auto;
    }

    .left-hero {
        padding: 2rem 0;
    }

    .right-panel {
        padding: 2rem 1.25rem 3rem;
    }
}