:root {
    --ink: #0f172a;
    --ink-soft: #334155;
    --muted: #64748b;
    --line: #e2e8f0;
    --line-strong: #cbd5e1;
    --paper: #ffffff;
    --paper-soft: #f8fafc;

    /* cohesive cool accent ramp: violet -> blue -> sky */
    --violet: #6d5efc;
    --blue: #3b82f6;
    --sky: #0ea5e9;
    --accent: #5b63f0;
    --accent-deep: #3f46d6;

    --hero-ink: #0b1020;
    --danger: #b42318;
    --danger-bg: #fef2f2;
    --danger-line: rgba(180, 35, 24, 0.22);

    --radius-shell: 22px;
    --radius-card: 18px;
    --radius-field: 13px;
    --radius-pill: 10px;

    --ring-accent: 0 0 0 4px rgba(91, 99, 240, 0.18);
    --shadow-shell:
        0 2px 6px rgba(15, 23, 42, 0.04),
        0 18px 40px rgba(15, 23, 42, 0.10),
        0 40px 90px rgba(31, 41, 102, 0.16);
    --transition: 180ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
}

.login-body {
    margin: 0;
    color: var(--ink);
    font-family: "Heebo", "Segoe UI", Arial, sans-serif;
    background: #eef1fb;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

/* ---------- Ambient mesh-gradient backdrop ---------- */
.login-page {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 32px;
    overflow: hidden;
    background:
        radial-gradient(58% 70% at 12% 8%, rgba(109, 94, 252, 0.32), transparent 60%),
        radial-gradient(52% 64% at 88% 18%, rgba(14, 165, 233, 0.26), transparent 58%),
        radial-gradient(70% 80% at 78% 96%, rgba(59, 130, 246, 0.24), transparent 60%),
        radial-gradient(46% 60% at 30% 100%, rgba(124, 58, 237, 0.18), transparent 62%),
        linear-gradient(160deg, #eef1fb 0%, #e7ecfa 48%, #e9f3fb 100%);
}

/* soft floating glow blob for extra depth */
.login-page::before {
    content: "";
    position: absolute;
    width: 60vmax;
    height: 60vmax;
    top: -22vmax;
    right: -18vmax;
    border-radius: 50%;
    background: radial-gradient(circle at 50% 50%, rgba(109, 94, 252, 0.22), transparent 68%);
    filter: blur(18px);
    pointer-events: none;
}

/* fine grain to break up the gradient banding */
.login-page::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(rgba(15, 23, 42, 0.035) 1px, transparent 1px);
    background-size: 4px 4px;
    opacity: 0.6;
    mix-blend-mode: multiply;
    pointer-events: none;
}

/* ---------- Floating split card ---------- */
.login-shell {
    position: relative;
    z-index: 1;
    width: min(1080px, 100%);
    min-height: 600px;
    display: grid;
    grid-template-columns: minmax(360px, 430px) minmax(0, 1fr);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: var(--radius-shell);
    background: rgba(255, 255, 255, 0.72);
    box-shadow: var(--shadow-shell);
    backdrop-filter: blur(20px) saturate(120%);
    -webkit-backdrop-filter: blur(20px) saturate(120%);
}

/* ---------- Hero (dark glass surface for the logo) ---------- */
.login-hero {
    position: relative;
    order: 2; /* keep hero visually on the LEFT in this RTL split */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 32px;
    min-height: 100%;
    padding: 52px 48px;
    color: #ffffff;
    background:
        radial-gradient(70% 60% at 18% 8%, rgba(109, 94, 252, 0.55), transparent 60%),
        radial-gradient(64% 60% at 92% 96%, rgba(14, 165, 233, 0.42), transparent 58%),
        radial-gradient(80% 70% at 88% 12%, rgba(59, 130, 246, 0.30), transparent 62%),
        linear-gradient(150deg, #14163a 0%, var(--hero-ink) 60%, #0a1530 100%);
    isolation: isolate;
}

/* glossy soft sheen overlay */
.login-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(120% 80% at 10% -10%, rgba(255, 255, 255, 0.14), transparent 45%);
    pointer-events: none;
    z-index: 0;
}

/* subtle drifting orb for depth */
.login-hero::after {
    content: "";
    position: absolute;
    width: 320px;
    height: 320px;
    right: -90px;
    bottom: -120px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(91, 99, 240, 0.45), transparent 70%);
    filter: blur(12px);
    pointer-events: none;
    z-index: 0;
}

.brand-lockup,
.hero-copy,
.hero-meta {
    position: relative;
    z-index: 1;
}

.brand-lockup {
    display: flex;
    align-items: center;
    gap: 18px;
}

.brand-logo {
    width: 132px;
    height: auto;
    display: block;
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.12),
        0 10px 24px rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.brand-kicker {
    margin: 0 0 6px;
    color: rgba(199, 210, 254, 0.92);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.brand-lockup h1 {
    margin: 0;
    font-size: 33px;
    line-height: 1.12;
    font-weight: 800;
    letter-spacing: -0.01em;
}

.hero-copy {
    max-width: 460px;
    margin: auto 0 0;
    font-size: 23px;
    line-height: 1.5;
    font-weight: 500;
    color: rgba(241, 245, 249, 0.96);
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hero-meta span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.06);
    color: rgba(241, 245, 249, 0.92);
    font-size: 13.5px;
    font-weight: 600;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.hero-meta i {
    color: #a5b4fc;
    font-size: 14px;
}

/* ---------- Panel (solid surfaces for readability) ---------- */
.login-panel {
    order: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 52px 48px;
    background: #ffffff;
}

.panel-heading {
    margin-bottom: 28px;
}

.panel-heading p {
    margin: 0 0 6px;
    color: var(--accent);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.panel-heading h2 {
    margin: 0;
    font-size: 30px;
    line-height: 1.2;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--ink);
}

.login-alert {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding: 13px 15px;
    border: 1px solid var(--danger-line);
    border-radius: var(--radius-field);
    color: var(--danger);
    background: var(--danger-bg);
    font-size: 14px;
    font-weight: 500;
    line-height: 1.45;
    box-shadow: 0 6px 16px rgba(180, 35, 24, 0.08);
}

.login-alert i {
    flex: 0 0 auto;
    font-size: 16px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 0;
    color: var(--ink-soft);
    font-size: 13.5px;
    font-weight: 700;
}

.field-group label {
    text-align: right;
    letter-spacing: 0.005em;
}

.field-group.compact {
    flex: 1;
}

/* ---------- Inputs (icon on RIGHT in RTL) ---------- */
.input-shell {
    position: relative;
    display: block;
}

.input-shell > i {
    position: absolute;
    top: 50%;
    right: 15px;
    transform: translateY(-50%);
    color: var(--muted);
    font-size: 15px;
    pointer-events: none;
    transition: color var(--transition);
}

.input-shell input {
    width: 100%;
    height: 50px;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-field);
    padding: 0 44px 0 16px;
    color: var(--ink);
    background: var(--paper-soft);
    font: inherit;
    font-size: 15px;
    font-weight: 500;
    outline: none;
    transition:
        border-color var(--transition),
        box-shadow var(--transition),
        background-color var(--transition);
}

.input-shell input::placeholder {
    color: #94a3b8;
}

/* leave room for the toggle on the LEFT in RTL */
.input-shell.has-action input {
    padding-left: 50px;
}

.input-shell input:hover {
    border-color: var(--line-strong);
    background: #ffffff;
}

.input-shell input:focus,
.input-shell input:focus-visible {
    border-color: var(--accent);
    background: #ffffff;
    box-shadow: var(--ring-accent);
}

.input-shell input:focus + .field-action,
.input-shell:focus-within > i {
    color: var(--accent);
}

/* ---------- Icon buttons (toggle + captcha refresh) ---------- */
.field-action,
.icon-button {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: var(--radius-pill);
    color: var(--muted);
    background: transparent;
    cursor: pointer;
    transition:
        color var(--transition),
        background-color var(--transition),
        border-color var(--transition),
        transform var(--transition);
}

/* password toggle pinned to LEFT edge in RTL */
.field-action {
    position: absolute;
    top: 50%;
    left: 6px;
    transform: translateY(-50%);
}

.field-action:hover,
.icon-button:hover {
    color: var(--accent-deep);
    border-color: rgba(91, 99, 240, 0.20);
    background: rgba(91, 99, 240, 0.08);
}

.field-action:active,
.icon-button:active {
    background: rgba(91, 99, 240, 0.14);
}

.field-action:focus-visible,
.icon-button:focus-visible,
.remember-row input:focus-visible + .checkmark,
.submit-button:focus-visible {
    outline: 3px solid rgba(91, 99, 240, 0.45);
    outline-offset: 2px;
}

/* ---------- Captcha ---------- */
.captcha-block {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.captcha-preview {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 56px;
    gap: 10px;
    align-items: center;
    padding: 9px;
    border: 1px solid rgba(91, 99, 240, 0.16);
    border-radius: var(--radius-field);
    background:
        linear-gradient(135deg, rgba(109, 94, 252, 0.07), rgba(14, 165, 233, 0.05)),
        #ffffff;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.captcha-preview img {
    width: 100%;
    height: 66px;
    object-fit: contain;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--paper-soft);
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.06);
}

.captcha-preview .icon-button {
    width: 56px;
    height: 66px;
    border-color: rgba(91, 99, 240, 0.20);
    color: var(--accent);
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 6px 16px rgba(91, 99, 240, 0.12);
}

.captcha-preview .icon-button i {
    transition: transform 300ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

.captcha-preview .icon-button:hover {
    color: #ffffff;
    border-color: transparent;
    background: linear-gradient(135deg, var(--violet), var(--blue));
}

.captcha-preview .icon-button:hover i {
    transform: rotate(-180deg);
}

/* ---------- Remember (custom checkbox) ---------- */
.remember-row {
    position: relative;
    min-height: 26px;
    display: inline-flex;
    align-items: center;
    gap: 11px;
    margin: 2px 0 6px;
    color: var(--ink-soft);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
}

.remember-row input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.checkmark {
    position: relative;
    width: 22px;
    height: 22px;
    flex: 0 0 22px;
    border: 1.5px solid var(--line-strong);
    border-radius: 7px;
    background: #ffffff;
    transition:
        border-color var(--transition),
        background-color var(--transition),
        box-shadow var(--transition);
}

.remember-row:hover .checkmark {
    border-color: var(--accent);
}

.remember-row input:checked + .checkmark {
    border-color: transparent;
    background: linear-gradient(135deg, var(--violet), var(--blue));
    box-shadow: 0 4px 10px rgba(91, 99, 240, 0.30);
}

.remember-row input:checked + .checkmark::after {
    content: "";
    position: absolute;
    top: 3px;
    left: 7px;
    width: 6px;
    height: 11px;
    border: solid #ffffff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* ---------- Submit (primary gradient button) ---------- */
.submit-button {
    position: relative;
    width: 100%;
    height: 52px;
    margin-top: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 0;
    border-radius: var(--radius-field);
    color: #ffffff;
    background: linear-gradient(135deg, var(--violet) 0%, var(--accent) 45%, var(--blue) 100%);
    font: inherit;
    font-size: 16.5px;
    font-weight: 800;
    letter-spacing: 0.01em;
    cursor: pointer;
    overflow: hidden;
    box-shadow:
        0 10px 24px rgba(91, 99, 240, 0.28),
        inset 0 1px 0 rgba(255, 255, 255, 0.22);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        filter var(--transition);
}

/* sweeping sheen on hover */
.submit-button::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.28) 50%, transparent 70%);
    transform: translateX(120%);
    transition: transform 600ms ease;
    pointer-events: none;
}

.submit-button i {
    font-size: 15px;
    transition: transform var(--transition);
}

.submit-button:hover {
    transform: translateY(-2px);
    filter: saturate(1.06);
    box-shadow:
        0 16px 34px rgba(63, 70, 214, 0.34),
        inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.submit-button:hover::before {
    transform: translateX(-120%);
}

/* arrow points logical-forward (left) in RTL — nudge it that way */
.submit-button:hover i {
    transform: translateX(-4px);
}

.submit-button:active {
    transform: translateY(0);
    box-shadow:
        0 8px 18px rgba(63, 70, 214, 0.26),
        inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition-duration: 1ms !important;
        animation-duration: 1ms !important;
    }
}

/* ---------- Responsive: collapse split ---------- */
@media (max-width: 900px) {
    .login-page {
        align-items: stretch;
        padding: 20px;
    }

    .login-shell {
        min-height: auto;
        grid-template-columns: 1fr;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background: #ffffff;
    }

    /* hero on TOP, panel below */
    .login-hero {
        order: 1;
        min-height: 240px;
        padding: 34px 32px;
        gap: 22px;
    }

    .login-panel {
        order: 2;
        padding: 34px 32px;
    }

    .hero-copy {
        max-width: none;
        margin-top: 10px;
        font-size: 19px;
    }

    .brand-lockup h1 {
        font-size: 29px;
    }
}

@media (max-width: 560px) {
    .login-page {
        padding: 12px;
    }

    .login-shell {
        border-radius: 18px;
    }

    .login-hero {
        align-items: center;
        gap: 18px;
        min-height: 210px;
        padding: 26px 22px;
        text-align: center;
    }

    .login-hero::after {
        display: none;
    }

    .brand-lockup {
        align-items: center;
        flex-direction: column;
        gap: 14px;
        text-align: center;
    }

    .brand-logo {
        width: 120px;
    }

    .brand-lockup h1 {
        font-size: 26px;
    }

    .hero-copy {
        margin-inline: auto;
        font-size: 17px;
    }

    .hero-meta {
        justify-content: center;
        gap: 8px;
    }

    .hero-meta span {
        padding: 6px 11px;
        font-size: 12.5px;
    }

    .login-panel {
        padding: 26px 22px;
    }

    .panel-heading {
        margin-bottom: 22px;
    }

    .panel-heading h2 {
        font-size: 25px;
    }

    .input-shell input {
        height: 48px;
    }

    .captcha-preview {
        grid-template-columns: minmax(0, 1fr) 52px;
    }

    .captcha-preview img,
    .captcha-preview .icon-button {
        height: 62px;
    }

    .captcha-preview .icon-button {
        width: 52px;
    }

    .submit-button {
        height: 50px;
        font-size: 16px;
    }
}