/* =============================================
   LOGIN PAGE — LIGHT THEME (DEFAULT)
============================================= */

:root {
    --bg: #f3f6fb;
    --card: #ffffff;
    --text: #0f172a;
    --muted: #64748b;
    --accent: #346df5;
    --border: rgba(0, 0, 0, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, system-ui, sans-serif;
    color: var(--text);
    background:
        radial-gradient(600px 300px at 20% -10%, rgba(52, 109, 245, 0.06), transparent),
        radial-gradient(600px 400px at 80% 120%, rgba(52, 109, 245, 0.04), transparent),
        linear-gradient(180deg, #f8fafc 0%, #f1f5f9 40%, #e8edf5 100%);
}

html, body {
    height: 100%;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.nav {
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
}

.nav-in {
    max-width: 1100px;
    margin: auto;
    padding: 14px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    font-weight: 800;
    font-size: 16px;
    letter-spacing: 0.5px;
}

.nav-links a {
    color: var(--muted);
    margin-right: 14px;
}

.pill {
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 13px;
    color: #475569;
}

/* Theme toggle button */
.theme-toggle-btn {
    padding: 6px 14px !important;
    border-radius: 999px !important;
    border: 1px solid var(--border) !important;
    background: transparent !important;
    color: var(--muted) !important;
    font-size: 13px !important;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex !important;
    align-items: center;
    gap: 6px;
    width: auto !important;
    margin: 0 !important;
    box-shadow: none !important;
}

.theme-toggle-btn:hover {
    background: rgba(0, 0, 0, 0.04) !important;
    border-color: rgba(0, 0, 0, 0.15) !important;
    transform: none !important;
    box-shadow: none !important;
}

.container {
    max-width: 420px;
    margin: 80px auto 40px auto;
    padding: 0 16px;
    flex: 1;
}

h1 {
    font-size: 28px;
    margin-bottom: 6px;
    font-weight: 700;
    text-align: center;
    color: var(--text);
}

.container h1 {
    margin-bottom: 28px;
}

.subtitle {
    color: var(--muted);
    margin-bottom: 32px;
    font-size: 14px;
}

.auth-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    padding: 28px;
    border-radius: 22px;
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    animation: fadeUp 0.6s ease;
}

.auth-card button {
    margin-top: 6px;
    margin-bottom: 18px;
}

.auth-card input {
    margin-bottom: 14px;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

h2 {
    margin-top: 0;
    font-size: 18px;
    margin-bottom: 18px;
    font-weight: 600;
    color: var(--text);
}

input {
    width: 100%;
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    background: rgba(241, 245, 249, 0.8);
    color: var(--text);
    margin-bottom: 16px;
    transition: all 0.25s ease;
    font-size: 14px;
}

input::placeholder {
    color: #94a3b8;
}

input:focus {
    outline: none;
    border-color: var(--accent);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(52, 109, 245, 0.12);
}

button {
    width: 100%;
    padding: 14px;
    border-radius: 16px;
    border: none;
    background: linear-gradient(90deg, #346df5, #5b8af7);
    color: #ffffff;
    font-weight: 700;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(52, 109, 245, 0.25);
}

button:active {
    transform: translateY(0);
}

.links {
    margin-top: 10px;
    text-align: center;
}
.links a {
    font-size: 13px;
    color: var(--accent);
    cursor: pointer;
}

.hidden {
    display: none;
}

.support {
    text-align: center;
    margin-top: 14px;
    font-size: 13px;
    color: var(--muted);
}
.support a {
    color: var(--accent);
}

/* Terms & Conditions checkbox gate */
.tnc-row {
    display: flex;
    align-items: center;
    gap: 5px;
    text-align: left;
    font-size: 11px;
    line-height: 1.4;
    margin: 4px 0 14px;
    cursor: pointer;
    user-select: none;
}
.tnc-row span { white-space: nowrap; }
/* Custom small grey checkbox */
.tnc-row input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 12px !important;
    height: 12px;
    margin: 0 !important;
    padding: 0 !important;
    flex-shrink: 0;
    border: 1.5px solid #94a3b8;
    border-radius: 3px;
    background: transparent;
    cursor: pointer;
    position: relative;
    transition: background 0.15s, border-color 0.15s;
}
.tnc-row input[type="checkbox"]:hover { border-color: #64748b; }
.tnc-row input[type="checkbox"]:checked {
    background: #6b7280;   /* grey fill, not blue */
    border-color: #6b7280;
}
/* White checkmark, geometrically centered */
.tnc-row input[type="checkbox"]:checked::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 3px;
    height: 6px;
    border: solid #fff;
    border-width: 0 1.5px 1.5px 0;
    transform: translate(-50%, -60%) rotate(45deg);
}
.tnc-row a {
    color: inherit;          /* no blue */
    text-decoration: underline;
}
/* Allow wrap only on very narrow phones */
@media (max-width: 420px) {
    .tnc-row span { white-space: normal; }
    .tnc-row { align-items: flex-start; }
    .tnc-row input[type="checkbox"] { margin-top: 1px !important; }
}
/* Locked (greyed) state of the login button */
#loginBtn.locked {
    opacity: 0.45;
    cursor: not-allowed;
    filter: grayscale(60%);
}
/* Red validation message */
.tnc-error {
    text-align: center;
    font-size: 12px;
    font-weight: 400;
    color: #ef4444;
    margin: -6px 0 12px;
}

.muted {
    color: var(--muted);
}

.logo {
    height: 34px;
    object-fit: contain;
}

/* Toast popup */
.toast {
    position: fixed;
    top: 84px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    min-width: 320px;
    max-width: 420px;
    padding: 14px 18px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: #ffffff;
    color: var(--text);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    animation: toastSlide 0.35s ease;
}

.toast.hidden {
    display: none;
}

.toast.success {
    border-color: rgba(34, 197, 94, 0.5);
    box-shadow: 0 0 22px rgba(34, 197, 94, 0.15);
}

.toast.error {
    border-color: rgba(239, 68, 68, 0.5);
    box-shadow: 0 0 22px rgba(239, 68, 68, 0.15);
}

.toast.info {
    border-color: rgba(52, 109, 245, 0.5);
    box-shadow: 0 0 22px rgba(52, 109, 245, 0.15);
}

@keyframes toastSlide {
    from { opacity: 0; transform: translate(-50%, -10px); }
    to { opacity: 1; transform: translate(-50%, 0); }
}

/* Password eye */
.pw-wrap {
    position: relative;
    display: flex;
    align-items: center;
    margin-bottom: 16px;
}
.pw-wrap input {
    margin-bottom: 0 !important;
    padding-right: 48px !important;
    flex: 1;
}
.pw-eye {
    position: absolute;
    right: 14px;
    width: auto !important;
    padding: 4px !important;
    margin: 0 !important;
    background: none !important;
    border: none !important;
    box-shadow: none !important;
    cursor: pointer;
    color: #64748b;
    display: flex;
    align-items: center;
    z-index: 10;
    transform: none !important;
}
.pw-eye:hover {
    color: #0f172a;
    transform: none !important;
    box-shadow: none !important;
}


/* =============================================
   DARK THEME
============================================= */

[data-theme="dark"] {
    --bg: #050f18;
    --card: #071b2e;
    --text: #eaf2ff;
    --muted: rgba(234, 242, 255, 0.65);
    --accent: #38bdf8;
    --border: rgba(234, 242, 255, 0.12);
}

[data-theme="dark"] body {
    background:
        radial-gradient(600px 300px at 20% -10%, rgba(56, 189, 248, 0.25), transparent),
        radial-gradient(600px 400px at 80% 120%, rgba(124, 58, 237, 0.25), transparent),
        linear-gradient(180deg, #05121f 0%, #050f18 40%, #071b2e 100%);
}

[data-theme="dark"] .nav {
    border-bottom-color: var(--border);
    background: rgba(5, 15, 24, 0.6);
}

[data-theme="dark"] .pill {
    color: var(--text);
    border-color: var(--border);
}

[data-theme="dark"] .theme-toggle-btn {
    color: rgba(234, 242, 255, 0.7) !important;
    border-color: var(--border) !important;
    background: transparent !important;
}

[data-theme="dark"] .theme-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.05) !important;
    border-color: rgba(255, 255, 255, 0.2) !important;
}

[data-theme="dark"] h1 {
    color: var(--text);
}

[data-theme="dark"] .auth-card {
    background: rgba(7, 27, 46, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] h2 {
    color: var(--text);
}

[data-theme="dark"] input {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border);
    color: var(--text);
}

[data-theme="dark"] input::placeholder {
    color: rgba(234, 242, 255, 0.4);
}

[data-theme="dark"] input:focus {
    border-color: #38bdf8;
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.25);
}

[data-theme="dark"] button {
    background: linear-gradient(90deg, #38bdf8, #22d3ee);
    color: #0a1929;
}

[data-theme="dark"] button:hover {
    box-shadow: 0 12px 30px rgba(56, 189, 248, 0.35);
}

[data-theme="dark"] .links a {
    color: #38bdf8;
}

[data-theme="dark"] .support {
    color: rgba(234, 242, 255, 0.6);
}

[data-theme="dark"] .support a {
    color: #38bdf8;
}

[data-theme="dark"] .toast {
    background: linear-gradient(180deg, #071b2e, #041018);
    color: var(--text);
    border-color: var(--border);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.55);
}

[data-theme="dark"] .pw-eye {
    color: #94a3b8;
}

[data-theme="dark"] .pw-eye:hover {
    color: #e2e8f0;
}