/* ==========================================================================
   Buyer MVC - Premium Minimalist Design System (Strictly Black & White)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@400;500;600;800&display=swap');

:root {
    /* Light mode (default) */
    --bg-main: #f4f4f5;
    --bg-card: #ffffff;
    --bg-glass: rgba(0, 0, 0, 0.02);

    --border-color: rgba(0, 0, 0, 0.1);
    --border-glow: rgba(0, 0, 0, 0.22);

    --primary: #000000;
    --primary-hover: #262626;
    --accent: #000000;
    --accent-glow: rgba(0, 0, 0, 0.06);

    --text-primary: #0a0a0a;
    --text-secondary: #525252;
    --text-muted: #a3a3a3;

    --success: #166534;
    --danger: #b91c1c;

    --navbar-bg: rgba(255, 255, 255, 0.92);
    --brand-color: #000000;
    --brand-muted: #525252;
    --input-bg: rgba(0, 0, 0, 0.03);
    --input-bg-focus: rgba(0, 0, 0, 0.05);
    --input-disabled-bg: rgba(0, 0, 0, 0.06);
    --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --card-shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.12);
    --btn-primary-bg: #000000;
    --btn-primary-fg: #ffffff;
    --btn-primary-border: #000000;
    --btn-primary-hover-bg: #ffffff;
    --btn-primary-hover-fg: #000000;
    --btn-primary-hover-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    --btn-accent-fg: #0a0a0a;
    --btn-accent-border: rgba(0, 0, 0, 0.28);
    --btn-accent-hover-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    --modal-overlay: rgba(0, 0, 0, 0.55);
    --modal-bg: #ffffff;
    --modal-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    --ambient-opacity: 0.06;
    --surface-muted: rgba(0, 0, 0, 0.03);
    --lang-active-bg: #000000;
    --lang-active-fg: #ffffff;

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg-main: #000000;
    --bg-card: rgba(18, 18, 18, 0.85);
    --bg-glass: rgba(255, 255, 255, 0.02);

    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(255, 255, 255, 0.25);

    --primary: #ffffff;
    --primary-hover: #e5e5e5;
    --accent: #ffffff;
    --accent-glow: rgba(255, 255, 255, 0.1);

    --text-primary: #ffffff;
    --text-secondary: #a3a3a3;
    --text-muted: #525252;

    --success: #ffffff;
    --danger: #737373;

    --navbar-bg: rgba(0, 0, 0, 0.85);
    --brand-color: #ffffff;
    --brand-muted: #a3a3a3;
    --input-bg: rgba(255, 255, 255, 0.02);
    --input-bg-focus: rgba(255, 255, 255, 0.04);
    --input-disabled-bg: rgba(0, 0, 0, 0.4);
    --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    --card-shadow-hover: 0 12px 48px rgba(255, 255, 255, 0.03);
    --btn-primary-bg: #ffffff;
    --btn-primary-fg: #000000;
    --btn-primary-border: #ffffff;
    --btn-primary-hover-bg: #000000;
    --btn-primary-hover-fg: #ffffff;
    --btn-primary-hover-shadow: 0 8px 24px rgba(255, 255, 255, 0.15);
    --btn-accent-fg: #ffffff;
    --btn-accent-border: rgba(255, 255, 255, 0.3);
    --btn-accent-hover-shadow: 0 8px 24px rgba(255, 255, 255, 0.15);
    --modal-overlay: rgba(0, 0, 0, 0.85);
    --modal-bg: #000000;
    --modal-shadow: 0 10px 40px rgba(255, 255, 255, 0.05);
    --ambient-opacity: 0.04;
    --surface-muted: rgba(255, 255, 255, 0.02);
    --lang-active-bg: #ffffff;
    --lang-active-fg: #000000;
}

/* Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Ambient Backlighting (Extremely Subtle Spotlight) */
body::before, body::after {
    content: '';
    position: absolute;
    width: 35rem;
    height: 35rem;
    border-radius: 50%;
    filter: blur(160px);
    z-index: -1;
    pointer-events: none;
    opacity: var(--ambient-opacity);
}

body::before {
    background: var(--primary);
    top: -10rem;
    left: -10rem;
}

body::after {
    background: var(--accent);
    bottom: -10rem;
    right: -10rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--text-secondary);
}

/* Containers */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Premium Minimalist Cards */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--card-shadow);
    padding: 2.5rem;
    transition: var(--transition);
}

.glass-card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--card-shadow-hover);
}

/* Inputs and Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    padding: 0.75rem 1rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--accent);
    background-color: var(--input-bg-focus);
    outline: none;
    box-shadow: 0 0 12px var(--accent-glow);
}

.form-control:disabled {
    opacity: 0.5;
    background-color: var(--input-disabled-bg);
    border-color: var(--border-color);
    cursor: not-allowed;
}

/* Monochromatic Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.65rem 1.25rem;
    border-radius: 4px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-fg);
    border: 1px solid var(--btn-primary-border);
}

.btn-primary:hover {
    background-color: var(--btn-primary-hover-bg);
    color: var(--btn-primary-hover-fg);
    border-color: var(--btn-primary-border);
    transform: translateY(-2px);
    box-shadow: var(--btn-primary-hover-shadow);
}

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

.btn-accent {
    background-color: transparent;
    color: var(--btn-accent-fg);
    border: 1px solid var(--btn-accent-border);
}

.btn-accent:hover {
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-fg);
    border-color: var(--btn-primary-border);
    transform: translateY(-2px);
    box-shadow: var(--btn-accent-hover-shadow);
}

.btn-danger {
    background-color: transparent;
    color: #a3a3a3;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-danger:hover {
    background-color: #ff3333;
    color: #ffffff;
    border-color: #ff3333;
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* Header/Navbar */
.navbar {
    background: var(--navbar-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1rem 0;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--brand-color);
}

.brand span {
    font-weight: 300;
    color: var(--brand-muted);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* Language Switcher */
.lang-switch {
    display: flex;
    gap: 0.25rem;
}

.lang-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.lang-btn.active, .lang-btn:hover {
    border-color: var(--accent);
    color: var(--lang-active-fg);
    background: var(--lang-active-bg);
}

/* Theme toggle */
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 4px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: var(--transition);
}

.theme-toggle:hover {
    border-color: var(--accent);
    color: var(--text-primary);
    background: var(--surface-muted);
}

/* Grid Layout for Dashboard */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    margin-top: 3rem;
}

.dashboard-split-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 1.5rem;
    align-items: stretch;
}

@media (max-width: 992px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .dashboard-split-row {
        grid-template-columns: 1fr;
    }
}

/* Contact Grid */
.contacts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.contact-card {
    background: var(--surface-muted);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1.5rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.contact-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.08);
}

.contact-name {
    font-family: var(--font-heading);
    font-size: 17px;
    font-weight: 500;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.contact-info {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-info i {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Modal Styling */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--modal-overlay);
    backdrop-filter: blur(12px);
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: var(--modal-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    padding: 2.5rem;
    box-shadow: var(--modal-shadow);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal.show .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.close-btn {
    background: transparent;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
}

.close-btn:hover {
    color: var(--text-primary);
}

/* Alert notifications */
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
    font-size: 14px;
}

.alert-danger,
.alert-error {
    background: var(--surface-muted);
    border: 1px solid var(--border-color);
    color: var(--danger);
}

.alert-success {
    background: var(--btn-primary-bg);
    border: 1px solid var(--btn-primary-border);
    color: var(--btn-primary-fg);
}

/* ==========================================================================
   Responsive Utilities & Mobile Enhancements
   ========================================================================== */

/* Welcome Banner Responsive Card */
.welcome-banner {
    padding: 2rem 2.5rem;
    margin-top: 1rem;
    border-color: var(--border-glow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.welcome-banner h1 {
    font-size: 26px;
    text-transform: uppercase;
}

.welcome-banner p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-top: 0.25rem;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.welcome-banner .banner-separator {
    color: var(--text-muted);
    margin: 0 0.25rem;
}

/* Single Buyer Login Badge */
.single-buyer-badge {
    background: var(--surface-muted);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.25rem;
    border-radius: 4px;
    font-size: 13px;
}

/* Multi-column Form Grid */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Flex header wrapping for tables/sections */
.card-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
    gap: 1.5rem;
    flex-wrap: wrap;
}

/* Global Mobile Media Queries */
@media (max-width: 768px) {
    .container {
        padding: 0 1.25rem;
    }
    
    .glass-card {
        padding: 1.75rem;
    }
    
    .welcome-banner {
        padding: 1.5rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 1.25rem;
    }
    
    .welcome-banner h1 {
        font-size: 22px;
    }
    
    .welcome-banner p {
        font-size: 12px;
    }
}

@media (max-width: 576px) {
    .navbar {
        padding: 0.75rem 0;
    }

    .navbar-container {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }
    
    .nav-links {
        width: 100%;
        justify-content: center;
        gap: 1rem;
        flex-direction: row;
    }

    .lang-switch {
        gap: 0.15rem;
    }

    .brand {
        font-size: 18px;
        letter-spacing: 0.08em;
    }
    
    .dashboard-grid {
        margin-top: 1.5rem;
        gap: 1.25rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .card-header-flex {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .card-header-flex button,
    .card-header-flex .btn {
        width: 100%;
        text-align: center;
    }
    
    .modal-content {
        padding: 1.75rem;
        width: 95%;
    }
    
    .modal-header h3 {
        font-size: 18px;
    }
}

/* ==========================================================================
   Login Page — Responsive Layout
   ========================================================================== */

.login-wrapper {
    display: flex;
    min-height: 80vh;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
}

.login-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    width: 100%;
    max-width: 1000px;
    align-items: center;
}

/* Left info panel */
.login-info {
    padding: 3rem;
}

.login-info h1 {
    font-size: 40px;
    line-height: 1.15;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.login-info h1 span {
    color: var(--accent);
    font-weight: 300;
}

.login-info h3 {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 1.5rem;
}

.login-info > p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 2.5rem;
    line-height: 1.75;
}

/* App download callout box */
.login-info-app-box {
    background: var(--surface-muted);
    border-left: 2px solid var(--border-glow);
    padding: 1.25rem;
    border-radius: 4px;
}

.login-info-app-box h5 {
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.login-info-app-box h5 i {
    color: var(--accent);
}

.login-info-app-box p {
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.55;
}

/* Right login card */
.login-form-card {
    border-color: var(--border-glow);
}

.login-form-card h2 {
    font-size: 24px;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.login-form-card h2 i {
    color: var(--accent);
}

/* Register / Recover links row */
.login-links {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 13px;
}

/* ---- Tablet (≤ 900px): single column, hide info panel ---- */
@media (max-width: 900px) {
    .login-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        max-width: 520px;
    }

    .login-info {
        display: none;
    }

    .login-wrapper {
        padding: 1.5rem 0;
        min-height: auto;
    }
}

/* ---- Small mobile (≤ 480px): edge-to-edge card ---- */
@media (max-width: 480px) {
    .login-wrapper {
        padding: 1rem 0;
        align-items: flex-start;
    }

    .login-grid {
        max-width: 100%;
    }

    .login-form-card {
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    .login-form-card h2 {
        font-size: 20px;
    }

    .login-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

/* ==========================================================================
   Registration Page
   ========================================================================== */

.register-wrapper {
    display: flex;
    min-height: 80vh;
    align-items: flex-start;
    justify-content: center;
    padding: 2rem 0;
}

.register-grid {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 2rem;
    width: 100%;
    max-width: 1200px;
    align-items: start;
}

.register-info {
    position: sticky;
    top: 2rem;
}

.register-sidebar-block {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.register-sidebar-block h5 {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.register-sidebar-block p {
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.6;
}

.register-form-card {
    padding: 2rem;
    border-color: var(--border-glow);
}

.register-form-card h2 {
    font-size: 22px;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.register-section-title {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    margin: 1.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.register-section-title:first-of-type {
    margin-top: 0;
}

.form-hint {
    display: block;
    margin-top: 0.35rem;
    font-size: 11px;
    color: var(--text-muted);
}

.register-privacy {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.register-privacy p {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0.75rem 0;
    line-height: 1.6;
}

.privacy-check-label {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    font-size: 13px;
    cursor: pointer;
}

.privacy-check-label input {
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.register-back-link {
    text-align: center;
    margin-top: 1.25rem;
    font-size: 13px;
}

.register-success-card {
    max-width: 560px;
    margin: 0 auto;
}

.register-success-body {
    margin: 1.5rem 0 2rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

.register-success-body h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

@media (max-width: 900px) {
    .register-grid {
        grid-template-columns: 1fr;
        max-width: 640px;
    }

    .register-info {
        display: none;
    }
}

.section-title {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.section-title i {
    margin-right: 0.5rem;
    color: var(--accent);
}

.staff-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    margin-bottom: 0.5rem;
    background: var(--surface-muted);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: opacity 0.3s ease;
}

.staff-row .staff-name {
    flex: 1 1 160px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.staff-row .staff-edit-input {
    flex: 1 1 100%;
    padding: 0.5rem 0.75rem;
    font-size: 14px;
}

.staff-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    flex-shrink: 0;
}

.staff-actions .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.45rem 0.75rem;
    font-size: 11px;
    min-width: auto;
}

.staff-actions .btn-danger {
    color: #ff6666;
    border-color: rgba(255, 80, 80, 0.5);
}

.staff-actions .btn-danger:hover {
    color: #ffffff;
    background-color: #ff3333;
}

.staff-actions .btn i {
    font-size: 13px;
}