/* ── CSS Custom Properties ──────────────────────────────────────────────── */

:root {
    --primary-gradient: linear-gradient(135deg, #715AFF 0%, #5887FF 100%);
    --primary-color: #715AFF;
    --secondary-color: #5887FF;
    --accent-cyan: #55C1FF;
    --accent-yellow: #FFD93D;
    --dark-navy: #102E4A;
    --light-periwinkle: #A682FF;
}

/* ── Global ─────────────────────────────────────────────────────────────── */

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

/* ── Accessibility ──────────────────────────────────────────────────────── */

.skip-nav-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    z-index: 9999;
    padding: 0.75rem 1.5rem;
    background: #7c3aed;
    color: white;
    font-weight: 700;
    font-size: 1rem;
    border-radius: 0 0 8px 8px;
    text-decoration: none;
    transition: top 0.2s;
}

.skip-nav-link:focus {
    top: 0;
    outline: 3px solid #FFD700;
    outline-offset: 2px;
}

:focus-visible {
    outline: 3px solid #7c3aed;
    outline-offset: 2px;
    border-radius: 4px;
}

.update-input:focus-visible,
.form-control:focus-visible {
    outline: 3px solid #7c3aed;
    outline-offset: 0;
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.25);
}

.btn-make-payment:focus-visible,
.btn-make-payment-sm:focus-visible,
.btn-delete-link:focus-visible,
.filter-dropdown-btn:focus-visible,
.sort-toggle-btn:focus-visible,
.calc-help-btn:focus-visible,
.toggle-password:focus-visible,
.bill-hero-back:focus-visible,
.auth-link:focus-visible {
    outline: 3px solid #7c3aed;
    outline-offset: 3px;
}

.navbar-brand:focus-visible,
.nav-link:focus-visible,
.dropdown-item:focus-visible {
    outline: 3px solid #FFD700;
    outline-offset: 2px;
    border-radius: 4px;
}

.bill-toggle-input:focus-visible + .bill-toggle-track {
    outline: 3px solid #7c3aed;
    outline-offset: 2px;
    border-radius: 12px;
}

/* ── Navigation ─────────────────────────────────────────────────────────── */

.navbar-custom {
    background: var(--primary-gradient);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar-brand {
    color: white !important;
    font-size: 1.4rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.navbar-brand img {
    width: 80px;
    height: 80px;
}

.navbar-custom .nav-link {
    color: white !important;
    font-weight: 500;
    margin-left: 1.5rem;
    transition: opacity 0.3s;
}

.navbar-custom .nav-link:hover {
    opacity: 0.8;
}

.navbar-toggler {
    border-color: rgba(255, 255, 255, 0.5);
    padding: 0.4rem 0.65rem;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255%2C255%2C255%2C0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

@media (max-width: 991px) {
    .navbar-collapse {
        background: rgba(0, 0, 0, 0.18);
        border-radius: 12px;
        padding: 0.5rem 1rem 0.75rem;
        margin-top: 0.5rem;
    }
    .navbar-custom .nav-link {
        margin-left: 0;
        padding: 0.6rem 0;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .navbar-custom .nav-link:last-child {
        border-bottom: none;
    }
    .navbar-nav .dropdown-menu {
        background: rgba(255,255,255,0.1);
        border: none;
        padding: 0 0 0 1rem;
    }
    .navbar-nav .dropdown-menu .dropdown-item {
        color: rgba(255,255,255,0.85);
        padding: 0.5rem 0;
        font-size: 0.9rem;
    }
    .navbar-nav .dropdown-menu .dropdown-item:hover {
        background: transparent;
        color: white;
    }
}

/* ── Flash Messages / Alerts ────────────────────────────────────────────── */

.alert {
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 12px;
    font-weight: 500;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.alert .btn-close {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    font-weight: 700;
    color: inherit;
    opacity: 0.5;
    cursor: pointer;
    padding: 0;
    margin-left: 1rem;
    line-height: 1;
    transition: opacity 0.3s;
}

.alert .btn-close:hover {
    opacity: 1;
}

.alert-text {
    flex: 1;
}

.alert.fade-out {
    opacity: 0;
    transition: opacity 0.3s ease-out;
}

/* ── Page Container (articles, verifyEmail) ─────────────────────────────── */

.page-container {
    min-height: calc(100vh - 120px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem 1rem;
    background: linear-gradient(135deg, #E8F0FF 0%, #D4E6FF 100%);
}

/* ── Safari / iOS Fixes ─────────────────────────────────────────────────── */

input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
textarea {
    -webkit-appearance: none;
    appearance: none;
}

select.update-input,
.form-box select {
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%235a6c7d' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.9rem center;
    background-size: 14px;
    padding-right: 2.5rem;
    cursor: pointer;
}

/* Prevent iOS zoom on input focus */
.update-input,
.form-box .form-control,
.form-box .form-select {
    font-size: 16px;
}

/* iOS safe area padding for full-height pages */
.bill-detail-page,
.bills-page,
.page-container {
    padding-bottom: max(3rem, env(safe-area-inset-bottom));
}