/* Theme System - Light/Dark Mode Toggle with smooth transitions */

/* CSS Variables for Theme Support */
:root {
    /* Dark theme variables (default) */
    --body-bg: #212529;
    --body-color: #e9ecef;
    --card-bg: #343a40;
    --card-border: #495057;
    --card-header-bg: #2b3035;
    --input-bg: #2b3035;
    --input-border: #495057;
    --input-color: #e9ecef;
    --dropdown-bg: #343a40;
    --dropdown-color: #e9ecef;
    --dropdown-border: rgba(255, 255, 255, 0.15);
    --modal-bg: #343a40;
    --modal-color: #e9ecef;
    --modal-border: rgba(255, 255, 255, 0.1);
    --btn-close-filter: invert(1) grayscale(100%) brightness(200%);
    --navbar-dark-toggler: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.55%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    --navbar-light-toggler: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%280, 0, 0, 0.55%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Light Theme Variables */
[data-bs-theme="light"] {
    --body-bg: #f8f9fa;
    --body-color: #212529;
    --card-bg: #ffffff;
    --card-border: #dee2e6;
    --card-header-bg: #f8f9fa;
    --input-bg: #ffffff;
    --input-border: #ced4da;
    --input-color: #212529;
    --dropdown-bg: #ffffff;
    --dropdown-color: #212529;
    --dropdown-border: rgba(0, 0, 0, 0.15);
    --modal-bg: #ffffff;
    --modal-color: #212529;
    --modal-border: rgba(0, 0, 0, 0.1);
    --btn-close-filter: none;
}

/* Apply transitions to all elements that will change with theme */
* {
    transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Basic elements */
body {
    background-color: var(--body-bg);
    color: var(--body-color);
}

/* Navbar theme adjustments */
.navbar-dark {
    background-color: var(--card-bg) !important;
}

[data-bs-theme="light"] .navbar-dark {
    background-color: #343a40 !important;
}

.navbar-toggler-icon {
    background-image: var(--navbar-dark-toggler);
}

[data-bs-theme="light"] .navbar-toggler-icon {
    background-image: var(--navbar-light-toggler);
}

/* Card theme adjustments */
.card {
    background-color: var(--card-bg);
    border-color: var(--card-border);
}

.card-header {
    background-color: var(--card-header-bg);
    border-bottom-color: var(--card-border);
}

.card-body {
    color: var(--body-color);
}

/* Form controls theme adjustments */
.form-control,
.form-select {
    background-color: var(--input-bg);
    border-color: var(--input-border);
    color: var(--input-color);
}

.form-control:focus,
.form-select:focus {
    background-color: var(--input-bg);
    color: var(--input-color);
}

/* Input placeholder color adjustment */
.form-control::placeholder {
    color: var(--body-color);
    opacity: 0.6;
}

/* Dropdown theme adjustments */
.dropdown-menu {
    background-color: var(--dropdown-bg);
    border-color: var(--dropdown-border);
}

.dropdown-item {
    color: var(--dropdown-color);
}

.dropdown-item:hover, 
.dropdown-item:focus {
    background-color: rgba(0, 0, 0, 0.1);
}

[data-bs-theme="light"] .dropdown-item:hover, 
[data-bs-theme="light"] .dropdown-item:focus {
    background-color: rgba(0, 0, 0, 0.05);
}

/* Modal theme adjustments */
.modal-content {
    background-color: var(--modal-bg);
    color: var(--modal-color);
}

.modal-header {
    border-bottom-color: var(--modal-border);
}

.modal-footer {
    border-top-color: var(--modal-border);
}

.btn-close {
    filter: var(--btn-close-filter);
}

/* Theme toggle button visual indicator */
#theme-toggle, #theme-toggle-guest {
    position: relative;
    padding-left: 40px;
}

#theme-toggle:before, #theme-toggle-guest:before {
    content: "";
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

[data-bs-theme="dark"] #theme-toggle:before, 
[data-bs-theme="dark"] #theme-toggle-guest:before {
    background: linear-gradient(135deg, transparent 0%, transparent 50%, #e9ecef 50%, #e9ecef 100%);
}

[data-bs-theme="light"] #theme-toggle:before,
[data-bs-theme="light"] #theme-toggle-guest:before {
    background: linear-gradient(135deg, #212529 0%, #212529 50%, transparent 50%, transparent 100%);
}

/* Mobile tab bar theme adjustments */
.mobile-tab-bar {
    background-color: var(--card-bg);
    border-top-color: var(--card-border);
}

/* Transition for theme toggle button text */
#theme-text, #theme-text-guest {
    transition: all 0.3s ease;
}