/* ==========================================================================
   OAUTH FRAMEWORK - CORE DESIGN TOKENS & RESET
   Reusable, copy-and-configure authorization styling
   ========================================================================== */

:root {
    color-scheme: dark;

    /* Brand & Accent */
    --oauth-primary: #00a184;
    --oauth-primary-hover: #00b896;
    --oauth-primary-rgb: 0, 161, 132;
    --oauth-secondary: #0ea5e9;

    /* Backgrounds */
    --oauth-bg-body: #090d16;
    --oauth-bg-surface: #111827;
    --oauth-bg-card: #162032;
    --oauth-bg-input: #1a263c;
    --oauth-bg-hover: #1f2d47;
    --oauth-bg-active: rgba(0, 161, 132, 0.12);

    /* Borders */
    --oauth-border: rgba(255, 255, 255, 0.08);
    --oauth-border-hover: rgba(255, 255, 255, 0.16);
    --oauth-border-focus: var(--oauth-primary);

    /* Text Colors */
    --oauth-text-primary: #f8fafc;
    --oauth-text-secondary: #94a3b8;
    --oauth-text-tertiary: #64748b;
    --oauth-text-inverse: #0b0f19;

    /* Semantic States */
    --oauth-success: #10b981;
    --oauth-warning: #f59e0b;
    --oauth-danger: #ef4444;
    --oauth-info: #38bdf8;

    /* Elevation & Shadows */
    --oauth-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
    --oauth-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
    --oauth-shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
    --oauth-glow-primary: 0 0 24px rgba(0, 161, 132, 0.25);

    /* Radii */
    --oauth-radius-sm: 6px;
    --oauth-radius-md: 10px;
    --oauth-radius-lg: 16px;
    --oauth-radius-full: 9999px;

    /* Layout metrics */
    --oauth-popup-width: 480px;
    --oauth-popup-max-height: 640px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--oauth-bg-body);
    color: var(--oauth-text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Button Foundations */
.oauth-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--oauth-radius-md);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    border: 1px solid transparent;
    text-decoration: none;
    user-select: none;
}

.oauth-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.oauth-btn-primary {
    background-color: var(--oauth-primary);
    color: var(--oauth-text-inverse);
    border-color: var(--oauth-primary);
    box-shadow: 0 2px 10px rgba(var(--oauth-primary-rgb), 0.3);
}

.oauth-btn-primary:hover:not(:disabled) {
    background-color: var(--oauth-primary-hover);
    border-color: var(--oauth-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(var(--oauth-primary-rgb), 0.45);
}

.oauth-btn-secondary {
    background-color: var(--oauth-bg-input);
    color: var(--oauth-text-primary);
    border-color: var(--oauth-border);
}

.oauth-btn-secondary:hover:not(:disabled) {
    background-color: var(--oauth-bg-hover);
    border-color: var(--oauth-border-hover);
}

.oauth-btn-ghost {
    background-color: transparent;
    color: var(--oauth-text-secondary);
}

.oauth-btn-ghost:hover:not(:disabled) {
    color: var(--oauth-text-primary);
    background-color: rgba(255, 255, 255, 0.05);
}

.oauth-btn-full {
    width: 100%;
}

/* ==========================================================================
   GOOGLE-STYLE AUTH & ACCOUNT SELECT SCREENS
   ========================================================================== */

/* Card override for Google-style layout (no padding on card, handled per-section) */
.oauth-google-card {
    background: var(--oauth-bg-card);
    border-radius: var(--oauth-radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Header bar: "Sign in with [Provider]" */
.oauth-google-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--oauth-border);
    font-size: 14px;
    font-weight: 500;
    color: var(--oauth-text-secondary);
}

/* Body section */
.oauth-google-body {
    padding: 28px 24px 20px;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.oauth-google-title {
    font-size: 26px;
    font-weight: 400;
    color: var(--oauth-text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.oauth-google-subtitle {
    font-size: 14px;
    color: var(--oauth-text-secondary);
    margin-bottom: 24px;
}

.oauth-google-app-link {
    color: var(--oauth-primary);
    font-weight: 500;
}

/* Floating-label input group */
.oauth-google-field-wrap {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.oauth-google-input-group {
    position: relative;
}

.oauth-google-input {
    width: 100%;
    background: transparent;
    border: 1.5px solid var(--oauth-border-hover);
    border-radius: var(--oauth-radius-sm);
    color: var(--oauth-text-primary);
    font-size: 14px;
    padding: 14px 12px 6px;
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.oauth-google-input:focus {
    border-color: var(--oauth-primary);
}

.oauth-google-input.error {
    border-color: var(--oauth-danger);
}

/* Floating label */
.oauth-google-label {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
    color: var(--oauth-text-tertiary);
    pointer-events: none;
    transition: all 0.15s ease;
    background: transparent;
    padding: 0 2px;
}

.oauth-google-input:focus ~ .oauth-google-label,
.oauth-google-input:not(:placeholder-shown) ~ .oauth-google-label {
    top: 6px;
    transform: none;
    font-size: 11px;
    color: var(--oauth-primary);
}

.oauth-google-input.error ~ .oauth-google-label {
    color: var(--oauth-danger);
}

/* Error message */
.oauth-google-error {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--oauth-danger);
}

/* Text links */
.oauth-google-link {
    font-size: 13px;
    color: var(--oauth-primary);
    text-decoration: none;
    font-weight: 500;
    width: fit-content;
}

.oauth-google-link:hover {
    text-decoration: underline;
}

/* Policy footer text */
.oauth-google-policy {
    font-size: 11px;
    color: var(--oauth-text-tertiary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.oauth-google-policy a {
    color: var(--oauth-primary);
    text-decoration: none;
}

.oauth-google-policy a:hover { text-decoration: underline; }

/* Actions row: Cancel (text) + Next (pill button) */
.oauth-google-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.oauth-google-btn-text {
    background: none;
    border: none;
    color: var(--oauth-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: var(--oauth-radius-full);
    transition: background 0.15s;
}

.oauth-google-btn-text:hover {
    background: rgba(0, 161, 132, 0.08);
}

.oauth-google-btn-next {
    background: var(--oauth-primary);
    color: var(--oauth-text-inverse);
    border: none;
    font-size: 14px;
    font-weight: 500;
    padding: 10px 22px;
    border-radius: var(--oauth-radius-full);
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.01em;
}

.oauth-google-btn-next:hover {
    background: var(--oauth-primary-hover);
    box-shadow: 0 4px 14px rgba(var(--oauth-primary-rgb), 0.4);
}

/* Show password checkbox */
.oauth-google-checkbox-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--oauth-text-secondary);
    cursor: pointer;
    user-select: none;
    margin-top: 4px;
}

.oauth-google-checkbox-row input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--oauth-primary);
}

/* Account pill (shown in password sub-view) */
.oauth-google-account-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--oauth-bg-input);
    border: 1px solid var(--oauth-border);
    border-radius: var(--oauth-radius-full);
    padding: 4px 10px 4px 4px;
    margin-bottom: 16px;
    cursor: pointer;
    width: fit-content;
    font-size: 13px;
    color: var(--oauth-text-secondary);
    transition: background 0.15s;
}

.oauth-google-account-pill:hover {
    background: var(--oauth-bg-hover);
}

.oauth-google-pill-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--oauth-primary);
    color: #090d16;
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ==========================================================================
   ACCOUNT SELECT — Google "Choose an account" row list
   ========================================================================== */

.oauth-google-account-list {
    margin: 16px 0 0;
    border: 1px solid var(--oauth-border);
    border-radius: var(--oauth-radius-md);
    overflow: hidden;
}

.oauth-google-account-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    cursor: pointer;
    transition: background 0.15s;
}

.oauth-google-account-row:hover {
    background: rgba(255, 255, 255, 0.04);
}

.oauth-google-account-row:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.06);
}

.oauth-google-row-divider {
    height: 1px;
    background: var(--oauth-border);
    margin: 0 16px;
}

/* Avatar circle with color */
.oauth-google-row-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* "Use another account" icon avatar */
.oauth-google-row-avatar-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--oauth-bg-input);
    border: 1px solid var(--oauth-border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--oauth-text-secondary);
}

.oauth-google-row-info {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.oauth-google-row-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--oauth-text-primary);
}

.oauth-google-row-email {
    font-size: 12px;
    color: var(--oauth-text-secondary);
}

/* ==========================================================================
   GOOGLE-STYLE DESKTOP TWO-COLUMN VIEWPORT
   Wide card with left/right column split when not in compact popup mode
   ========================================================================== */

.oauth-google-desktop-grid,
.oauth-desktop-split {
    display: flex;
    flex-direction: column;
}

.oauth-desktop-footer {
    display: none;
}

.oauth-desktop-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
}

.oauth-btn-secondary {
    background: transparent;
    border: 1px solid var(--oauth-border);
    color: var(--oauth-text-primary);
    padding: 9px 20px;
    border-radius: 20px;
    font-size: 13.5px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.oauth-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--oauth-border-hover);
}

.oauth-btn-primary {
    background: var(--oauth-primary);
    border: none;
    color: #090d16;
    padding: 9px 22px;
    border-radius: 20px;
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.oauth-btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 4px 12px rgba(var(--oauth-primary-rgb), 0.3);
}

/* Explicit popup mode constraint: strictly single column */
body.in-popup-window .oauth-desktop-footer {
    display: none !important;
}

body.in-popup-window .oauth-card {
    max-width: 100% !important;
    border-radius: 0 !important;
    border: none !important;
    box-shadow: none !important;
    background: var(--oauth-bg-surface) !important;
}

body.in-popup-window .oauth-google-desktop-grid,
body.in-popup-window .oauth-desktop-split {
    display: flex !important;
    flex-direction: column !important;
    padding: 24px 20px 20px !important;
    gap: 0 !important;
}

body.in-popup-window .oauth-google-title {
    font-size: 24px !important;
    margin-bottom: 8px !important;
}

/* Desktop Preview / Standard Viewport (min-width: 680px) */
@media (min-width: 680px) {
    body:not(.in-popup-window) .oauth-card,
    .desktop-preview .oauth-card {
        max-width: 880px;
        width: 100%;
        border-radius: 28px;
        background: #111827;
        border: 1px solid var(--oauth-border-hover);
        box-shadow: 0 24px 64px rgba(0, 0, 0, 0.65);
        margin: 0 auto;
    }

    body:not(.in-popup-window) .oauth-google-desktop-grid,
    .desktop-preview .oauth-google-desktop-grid,
    body:not(.in-popup-window) .oauth-desktop-split,
    .desktop-preview .oauth-desktop-split {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 48px;
        padding: 40px 44px 36px;
        align-items: start;
        box-sizing: border-box;
    }

    body:not(.in-popup-window) .oauth-google-col-left,
    .desktop-preview .oauth-google-col-left,
    body:not(.in-popup-window) .oauth-desktop-split-left,
    .desktop-preview .oauth-desktop-split-left {
        display: flex;
        flex-direction: column;
        text-align: left;
    }

    body:not(.in-popup-window) .oauth-google-header,
    .desktop-preview .oauth-google-header {
        border-bottom: none;
        padding: 0 0 16px 0;
        font-size: 14.5px;
        font-weight: 500;
        color: var(--oauth-text-secondary);
    }

    body:not(.in-popup-window) .oauth-google-title,
    .desktop-preview .oauth-google-title {
        font-size: 34px;
        font-weight: 400;
        line-height: 1.25;
        margin-bottom: 12px;
        text-align: left;
        letter-spacing: -0.02em;
        color: #ffffff;
    }

    body:not(.in-popup-window) .oauth-google-subtitle,
    .desktop-preview .oauth-google-subtitle {
        font-size: 15.5px;
        color: var(--oauth-text-secondary);
        margin-bottom: 0;
        text-align: left;
        line-height: 1.5;
    }

    body:not(.in-popup-window) .oauth-google-account-list,
    .desktop-preview .oauth-google-account-list {
        margin-top: 0;
    }

    body:not(.in-popup-window) .oauth-google-col-right,
    .desktop-preview .oauth-google-col-right,
    body:not(.in-popup-window) .oauth-desktop-split-right,
    .desktop-preview .oauth-desktop-split-right {
        display: flex;
        flex-direction: column;
    }

    /* Desktop Footer Bar */
    body:not(.in-popup-window) .oauth-desktop-footer,
    .desktop-preview .oauth-desktop-footer {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        max-width: 880px;
        margin: 16px auto 0;
        padding: 0 10px;
        font-size: 12px;
        color: var(--oauth-text-secondary);
        box-sizing: border-box;
    }

    .oauth-desktop-lang {
        display: flex;
        align-items: center;
        gap: 6px;
        cursor: pointer;
        padding: 6px 8px;
        border-radius: 6px;
        transition: background 0.2s, color 0.2s;
    }

    .oauth-desktop-lang:hover {
        background: rgba(255, 255, 255, 0.05);
        color: var(--oauth-text-primary);
    }

    .oauth-desktop-links {
        display: flex;
        align-items: center;
        gap: 20px;
    }

    .oauth-desktop-links a {
        color: var(--oauth-text-secondary);
        text-decoration: none;
        transition: color 0.2s;
    }

    .oauth-desktop-links a:hover {
        color: var(--oauth-text-primary);
    }
}